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 mondofacto - Online Medical Dictionary
Category: Health and Medicine > Medical Dictionary
Date & country: 26/01/2008, UK
Words: 116197


CD3
<immunology> A complex of at least five membrane-bound polypeptides in mature T-lymphocytes that are non-covalently associated with one another and with the T-cell receptor (receptors, antigen, T-cell). The CD3 complex includes the gamma, delta, epsilon, zeta, and eta chains (subunits). When antigen binds to the T-cell receptor, the CD3 compl …

CD30
<immunology> Differentiation antigens normally present in a small number of cells in the lymph nodes and tonsils in vivo, but also capable of being induced in a wide range of cells in vitro. They are clinically useful as tumour markers for ki-1 lymphoma (lymphoma, large-cell, ki-1) and some cases of lymphomatoid papulosis, mycosis fungoides, …

CD31
<immunology> Cell adhesion molecules present on virtually all monocytes, platelets, and granulocytes. Cd31 is highly expressed on endothelial cells and concentrated at the junctions between them. ... (12 Dec 1998) ...

CD34
<immunology> Glycoproteins found on immature haematopoietic cells and endothelial cells. They are the only molecules to date whose expression within the blood system is restricted to a small number of progenitor cells in the bone marrow. ... (12 Dec 1998) ...

CD36
<immunology> Leukocyte differentiation antigens and major platelet membrane glycoproteins present on monocytes, endothelial cells, platelets, mammary epithelial cells, and a variety of cultured cell lines. They play major roles in adhesion phenomena, signal transduction, and haematopathology. Cd36 is also the receptor for thrombospondin and m …

CD4
<immunology> 55-kD glycoproteins originally defined as differentiation antigens on T-lymphocytes, but also found on other cells including monocytes/macrophages. CD4 antigens are members of the immunoglobulin supergene family and are implicated as associative recognition elements in MHC (major histocompatibility complex) class II-restricted im …

CD4 cell
T helper cells which are targets for HIV infection. ... (09 Oct 1997) ...

CD4 cell count
The most commonly used surrogate marker for assessing the state of the immune system. As CD4 cell count declines, the risk of developing opportunistic infections increases. The normal range for CD4 cell counts is 500 to 1500 per cubic millimetre of blood. CD4 count should be rechecked at least every six to twelve months if CD4s are greater than 500 …

CD4 count, absolute
The number of helper T-lymphocytes in a cubic millimeter of blood. With HIV, the absolute CD4 count declines as the infection progresses. The absolute CD4 count is frequently used to monitor the extent of immune suppression in persons with HIV. Also called a T4 count. ... (12 Dec 1998) ...

CD4 immunoadhesins
<immunology> Chimeric molecules resulting from the fusion of recombinant soluble CD4 to the fc portion of immunoglobulins. These have potential use in the therapy of aids since they possess both the gp120-binding and HIV-blocking properties of rCD4 as well as the long plasma half-life and fc receptor-binding functions of immunoglobulin. ... (1 …

CD4 lymphocyte
A specific type of lymphocyte, derived from the thymus gland, that plays an important role in cellular immunity. T4 lymphocytes (CD4 cells) are decreased (absolute counts less than 200) in patients with AIDS resulting in compromised immune function. ... (27 Sep 1997) ...

CD4 lymphocyte count
A count of the number of CD4-positive lymphocytes in the blood. Determination requires the use of a fluorescence-activated flow cytometer. ... (12 Dec 1998) ...

CD4-CD8 count
The ratio of the number of helper-inducer T lymphocytes to cytotoxic-suppressor T lymphocytes, as measured by monoclonal antibodies to the CD4 surface antigen found on helper-inducer T-cells, and the CD8 surface antigen found on cytotoxic-suppressor T-cells. In healthy individuals, the H/S ratio ranges between 1.6 and 2.2.When the body mounts an im …

CD4-positive T-lymphocytes
A critical subpopulation of regulatory T-lymphocytes involved in the induction of most immunological functions. The HIV virus has selective tropism for the t4 cell which expresses the CD4 phenotypic marker, a receptor for HIV. In fact, the key element in the profound immunosuppression seen in HIV infection is the depletion of this subset of T-lymph …

CD40
<immunology> Differentiation antigens found on all mature B-lymphocytes and some epithelial cells, carcinomas, and lymphoid dendritic cells. This is a member of the tumour necrosis factor superfamily. Evidence suggests that CD40-dependent activation of B-cells is important for generation of memory B-cells within the germinal centres. ... (12 D …

CD44
<immunology> Acidic sulfated integral membrane glycoproteins expressed in several alternatively spliced and variable glycosylated forms on a wide variety of cell types including mature T-cells, B-cells, medullary thymocytes, granulocytes, macrophages, erythrocytes, and fibroblasts. Cd44 antigens are the principle cell surface receptors for hy …

CD45
<immunology> High-molecular weight glycoproteins uniquely expressed on the surface of all leukocytes and their haemopoietic progenitors. The CD45 family consists of multiple members that are all products of a single gene. Cd45 expression is necessary for signalling through the T-cell receptor. ... (12 Dec 1998) ...

CD45 phosphatase
<enzyme> Reverses glycoprotein cd3-induced microtubule-associated protein-2 kinase activity in jurkat t-cells ... Registry number: EC 3.1.3.- ... Synonym: glycoprotein-cd45 phosphatase, cd45 ptpase, cd45 phosphotyrosine phosphatase ... (26 Jun 1999) ...

CD5
<immunology> Glycoproteins expressed on all mature T-cells, thymocytes, and a subset of mature B-cells. Antibodies specific for CD5 can enhance T-cell receptor-mediated T-cell activation. The B-cell-specific molecule CD72 is a natural ligand for CD5. ... (12 Dec 1998) ...

CD50
<abbreviation> Curative dose. ... (05 Mar 2000) ...

CD55
<immunology> Glycoproteins broadly distributed among haematopoietic and non-haematopoietic cells. Cd55 prevents the assembly of c3 convertase or accelerates the disassembly of preformed convertase, thus blocking the formation of the membrane attack complex. ... (12 Dec 1998) ...

CD56
<immunology> The 140-kD isoform of ncam (neural cell adhesion molecule) containing a transmembrane domain and short cytoplasmic tail. It is expressed by all lymphocytes mediating non-MHC restricted cytotoxicity and is present on some neural tissues and tumours. ... (12 Dec 1998) ...

CD57
<immunology> Oligosaccharide antigenic determinants found principally on nk cells and T-cells. Their role in the immune response is poorly understood. ... (12 Dec 1998) ...

CD58
<immunology> Glycoproteins with a wide distribution on haematopoietic and non-haematopoietic cells and strongly expressed on macrophages. Cd58 mediates cell adhesion by binding to CD2 (antigens, CD2) and this enhances antigen-specific T-cell activation. ... (12 Dec 1998) ...

CD59
<immunology> Small glycoproteins found on both haematopoietic and non-haematopoietic cells. Cd59 restricts the cytolytic activity of homologous complement by binding to c8 and c9 and blocking the assembly of the membrane attack complex. ... (12 Dec 1998) ...

CD7
<immunology> Differentiation antigens expressed on pluripotential haematopoietic cells, most human thymocytes, and a major subset of peripheral blood T-lymphocytes. They have been implicated in integrin-mediated cellular adhesion and as signalling receptors on T-cells. ... (12 Dec 1998) ...

CD8
<immunology> Differentiation antigens found on thymocytes and on cytotoxic and suppressor T-lymphocytes. Cd8 antigens are members of the immunoglobulin supergene family and are associative recognition elements in major histocompatibility complex class I-restricted interactions. ... (12 Dec 1998) ...

CD8 cell
<immunology> One type of T-lymphocyte which bears the CD8 molecular marker on its surface. Some CD8 cells recognise and kill cancerous cells and those infected by intracellular pathogens (some bacteria, viruses and mycoplasma). These cells are called cytotoxic T-lymphocytes (see). ... (09 Oct 1997) ...

CD8-positive T-lymphocytes
A critical subpopulation of regulatory T-lymphocytes involved in MHC class I-restricted interactions. They include both cytotoxic T-lymphocytes (T-lymphocytes, cytotoxic) and suppressor T-lymphocytes (T-lymphocytes, suppressor-effector). ... (12 Dec 1998) ...

CD80
<immunology> The natural ligand for the T-cell antigen CD28 (antigens, CD28) mediating t-cell and B-cell adhesion. Cd80 is expressed on activated B-cells and gamma-interferon-stimulated monocytes. The binding of CD80 to CD28 and ctla-4 provides a co-stimulatory signal to T-cells and leads to greatly upregulated lymphokine production. ... (12 D …

CD95
<immunology> Differentiation antigens expressed on a variety of cell lines including myeloid and lymphoblastoid cell lines. Their primary role is to regulate peripheral immune responses, which is achieved by triggering apoptosis. ... (12 Dec 1998) ...

CDC
The Centres for Disease Control and Prevention (CDC). The American agency charged with tracking and investigating public health trends. Its stated mission is To promote health and quality of life by preventing and controlling disease, injury, and disability. A part of the U.S. Public Health Services (PHS) under the Department of Health and Human Se …

cdc gene
<molecular biology> Cell division cycle genes, of which many have now been defined, especially in yeasts. ... See cyclin. ... (18 Nov 1997) ...

cdc2+-CDC28-related protein kinase
<enzyme> From rice; key enzyme for cell cycle regulation in eukaryocytes; belongs to serine-threonine kinase subfamily ... Registry number: EC 2.7.10.- ... Synonym: cdc2-cdc28-pk, cdc2-cdc28-rp kinase ... (26 Jun 1999) ...

cdc28 protein kinase
<enzyme> A protein kinase encoded by the saccharomyces cerevisiae cdc28 gene and required for progression from the g1 to the s phase in the cell cycle. It is a complex of approximately 160 kD containing a substrate called p40. ... Registry number: EC 2.7.1.- ... (12 Dec 1998) ...

Cdc42Hs-associated kinase
<enzyme> Specifically binds cdc42hs in its GTP-bound form; 379 aa residues, mw 45 kD; aa sequence given in first source ... Registry number: EC 2.7.1.- ... (26 Jun 1999) ...

CDC5 protein kinase
<enzyme> Phosphorylates the residues that play a crucial role in mitotic function; genes msd2 and cdc5 are identical; 705 aa residues, mw 81 kD genbank m84220 ... Registry number: EC 2.7.1.- ... Synonym: cdc5 gene product ... (26 Jun 1999) ...

CDC7 protein kinase
<enzyme> From saccharomyces cerevisiae; amino acid sequence has been determined; human cdc7 (hucdc7) is genbank ab003698; xenopus cdc7 (xecdc7) is genbank ab003699 ... Registry number: EC 2.7.1.- ... Synonym: cdc7 gene product, hucdc7, xecdc7 ... (26 Jun 1999) ...

CDE antigens
rh blood group ...

CDE blood group
See Rh blood group, Blood Groups appendix. ... (05 Mar 2000) ...

cDNA
Synonym for complementary DNA ... <molecular biology> DNA that is synthesised from a messenger RNA template, the single-stranded form is often used as a probe in physical mapping to locate the gene or can be cloned in the double stranded form. ... Viral reverse transcriptase can be used to synthesise DNA that is complementary to RNA (for exampl …

cDNA clone
A duplex DNA, representing an mRNA, carried in a cloning vector. ... (05 Mar 2000) ...

cDNA library
Synonym for complementary DNA library ... <molecular biology> A collection of all of the mRNA molecules present in a cell or organism, all turned into cDNA molecules with the enzyme reverse transcriptase, then inserted into vectors (other DNA molecules which can continue to replicate after addition of foreign DNA). The library can then be prob …

CDP
<abbreviation> Cytidine 5'-diphosphate. ... (05 Mar 2000) ...

CDP reductase
<enzyme> Includes deoxy analog ... Registry number: EC 1.17.4.- ... Synonym: cytidine diphosphate reductase, deoxycytidine diphosphate reductase ... (26 Jun 1999) ...

CDP tyvelose-2-epimerase
<enzyme> A dual function enzyme; converts cdp-paratose to cpp-tyvelose in group d salmonellae; converts GDP-4-keto-6-deoxymannose to perosamine ... Registry number: EC 5.1.3.- ... Synonym: rfbe gene product, rfbe protein, perosamine synthetase ... (26 Jun 1999) ...

CDP-choline
<abbreviation> Cytidine diphosphocholine. ... (05 Mar 2000) ...

CDP-glucose oxidoreductase
<enzyme> From yersinia pseudotuberculosis; nad+-dependent; forms cdp-4-keto-6-deoxy-d-glucose ... Registry number: EC 1.1.1.- ... (26 Jun 1999) ...

CDP-glyceride
<abbreviation> Cytidine diphosphoglyceride. ... (05 Mar 2000) ...

CDP-sugar
<abbreviation> Cytidine diphosphosugar. ... (05 Mar 2000) ...

Cds1 kinase
<enzyme> Cds - checking DNA synthesis; a key component of the DNA replication-monitoring s/g2 checkpoint system; homologous to spk1 of s. Cerevisiae; genbank x85040 ... Registry number: EC 2.7.1.- ... Synonym: cds1(+) gene product ... (26 Jun 1999) ...

Ce
Symbol for cerium. ... (05 Mar 2000) ...

CEA
Synonym for carcinoembryonic antigen ... <tumour marker> Antigen found in blood of patients suffering from cancer of colon and some other diseases, that is otherwise normally found in foetal gut tissue. ... (19 Jan 1998) ...

ceasmic teratosis
A teratosis in which there is a failure of the lateral halves of a part to unite, as in cleft palate. ... (05 Mar 2000) ...

cebidae
The family of new world monkeys consisting of nine subfamilies: alouattinae (howler monkeys), aotinae (night monkeys), atelinae (spider monkeys), callicebinae (titis), callimiconinae (goeldi's marmosets), callitrichinae (marmosets), cebinae (capuchin monkeys), pithecinae (sakis), and saimirinae (squirrel monkeys). They inhabit the forests of south …

cebinae
A subfamily of new world monkeys in the family cebidae. They inhabit the forests of south and central america and comprise members of the genus cebus. ... (12 Dec 1998) ...

cebocephaly
Malformation of the head in which the features are suggestive of a monkey; there is usually a tendency toward cyclopia, with defective or absent nose and closely set eyes. ... Origin: G. Kebos, monkey, + kephale, head ... (05 Mar 2000) ...

cebus
A genus of the family cebidae, subfamily cebinae, consisting of four species which are divided into two groups, the tufted and untufted. C. Apella has tufts of hair over the eyes and sides of the head. The remaining species are without tufts - c. Capucinus, c. Nigrivultatus, and c. Albifrons. Cebus inhabits the forests of central and south america. …

Cecil
Arthur Bond, U.S. Urologist, 1885-1967. ... See: cecil urethroplasty. ... (05 Mar 2000) ...

cecropin
<protein> One of a group of inducible antibacterial proteins purified and characterised from Hyalophora cecropia (silkmoth) pupae and now found in several other species of endopterygote insects. ... Small basic proteins that cause lysis of both gram-positive and gram-negative bacteria. ... (13 Nov 1997) ...

cecum
Synonym for caecum ... <anatomy> A blind pouch-like commencement of the colon in the right lower quadrant of the abdomen at the end of the small intestine. The appendix is a diverticulum that extends off the caecum. ... (13 Nov 1997) ...

ced mutant
<organism> Giant multinucleate fresh water amoeba (up to 5mm long) much used for studies on the mechanism of cell locomotion. ... (18 Nov 1997) ...

cedar leaf oil
Oil obtained by steam distillation from the fresh leaves of Thuja occidentalis; used as an insect repellent and counterirritant, and in perfumery. ... Synonym: thuja oil. ... (05 Mar 2000) ...

cedar wood oil
Volatile oil obtained from the wood of Juniperus virginiana (family Pinaceae); used as an insect repellent, in perfumery, and as a clearing agent in microscopy. ... (05 Mar 2000) ...

Ceelen-Gellerstedt syndrome
Synonym for idiopathic pulmonary haemosiderosis ... <chest medicine> A rare, sporadic, fatal, mostly in children with an equal sex distribution. ... The condition also occurs in adults where there is a sex difference (M:F = 2:1). The patients present with recurrent attacks of pulmonary haemorrhage, acute phase: bat-wing alveolar infiltrates, cl …

Ceelen, Wilhelm
<person> 1884-1964. ... See: Ceelen-Gellerstedt syndrome. ... (05 Mar 2000) ...

cefaclor
<chemical> Semisynthetic, broad-spectrum antibiotic derivative of cephalexin proposed for oral use. ... Pharmacological action: cephalosporins. ... Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-((aminophenylacetyl)amino)-3-chloro-8-oxo-, (6R-(6alpha,7beta(R*)))- ... (12 Dec 1998) ...

cefadroxil
<chemical> Long-acting, broad-spectrum, water-soluble, cephalexin derivative proposed especially for children with upper respiratory infections. ... Pharmacological action: cephalosporins. ... Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-((amino(4-hydroxyphenyl)acetyl)amino)-3-methyl-8-oxo-, (6R-(6alpha,7beta(R*)))-
cefamandole
<chemical> Semisynthetic wide-spectrum cephalosporin with prolonged action, probably due to beta-lactamase resistance. It is used also as the nafate. ... Pharmacological action: cephalosporins. ... Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-((hydroxyphenylacetyl)amino)-3-(((1-methyl-1H-tetrazol-5-yl)thio)methyl)-8-o …

cefamandole nafate
A semisynthetic broad spectrum antibiotic derived from cephalosporin C; used by injection. ... (05 Mar 2000) ...

cefatrizine
<chemical> Orally active semisynthetic cephalosporin antibiotic with broad-spectrum activity. ... Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-((amino(4-hydroxyphenyl)acetyl)amino)-8-oxo-3-((1H-1,2,3-triazol-4-ylthio)methyl)-, (6R-(6alpha,7beta(R*)))- ... (12 Dec 1998) ...

cefazolin
<chemical> Semisynthetic cephalosporin analog with broad-spectrum antibiotic action due to inhibition of bacterial cell wall synthesis. It attains high serum levels and is excreted quickly via the urine. Side effects are similar to those of other cephalosporins. ... Pharmacological action: cephalosporins. ... Chemical name: 5-Thia-1-azabicyclo( …

cefmenoxime
<chemical> A cephalosporin antibiotic that is administered intravenously or intramuscularly. It is active against most common gram-positive and gram-negative microorganisms, is a potent inhibitor of enterobacteriaceae, and is highly resistant to hydrolysis by beta-lactamases. The drug has a high rate of efficacy in many types of infection and …

cefmetazole
<chemical> A semisynthetic cephamycin antibiotic with a broad spectrum of activity against both gram-positive and gram-negative microorganisms. It has a high rate of efficacy in many types of infection and to date no severe side effects have been noted. ... Pharmacological action: cephamycins. ... Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2- …

cefonicid
<chemical> A second-generation cephalosporin administered intravenously or intramuscularly. Its bactericidal action results from inhibition of cell wall synthesis. It is effective in the treatment of urinary tract infections, lower respiratory tract infections, and soft tissue and bone infections. ... Pharmacological action: cephalosporins. …

cefonicid disodium
C18H16N6Na2O8S3;a broad spectrum long acting cephalosporin antibiotic structurally related to cefamandole. ... (05 Mar 2000) ...

cefoperazone
<chemical> Semisynthetic broad-spectrum cephalosporin with a tetrazolyl moiety that is resistant to beta-lactamase. It has been proposed especially against pseudomonas infections. ... Pharmacological action: cephalosporins. ... Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-(((((4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl) …

cefoperazone sodium
C25H26N9NaO8S2;a semisynthetic piperazine-cephalosporin antibiotic. ... (05 Mar 2000) ...

ceforanide
C20H21N7O6 S2;a broad spectrum long-acting cephalosporin antibiotic. ... (05 Mar 2000) ...

cefotaxime
<chemical> Semisynthetic broad-spectrum cephalosporin proposed for pseudomonas infections. ... Pharmacological action: cephalosporins. ... Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-((acetyloxy)methyl)-7-(((2-amino-4-thiazolyl)(methoxyimino)acetyl)amino)-8-oxo-, monosodium salt, (6R-(6alpha,7beta(Z)))- ... (12 Dec 19 …

cefotaxime sodium
C16H16N5NaO7S2;a broad spectrum cephalosporin antibiotic. ... (05 Mar 2000) ...

cefotetan
<chemical> A semisynthetic cephamycin antibiotic that is administered intravenously or intramuscularly. The drug is highly resistant to a broad spectrum of beta-lactamases and is active against a wide range of both aerobic and anaerobic gram-positive and gram-negative microorganisms. It has a high rate of efficacy in many types of infections …

cefotetan disodium
C17H15N7Na2O8S4;a broad spectrum cephalosporin antibiotic. ... (05 Mar 2000) ...

cefotiam
<chemical> A cephalosporin antibiotic that has a broad spectrum of activity against both gram-positive and gram-negative microorganisms. It is the drug of choice for biliary tract infections and is a safe drug for perinatal infections. ... Pharmacological action: cephalosporins. ... Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxyli …

cefoxitin
<chemical> Semisynthetic cephamycin antibiotic resistant to beta-lactamase. ... Pharmacological action: cephamycins. ... Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-(((aminocarbonyl)oxy)methyl)-7-methoxy-8-oxo-7-((2-thienylacetyl)amino)-, (6R-cis)- ... (12 Dec 1998) ...

cefoxitin sodium
A semisynthetic antibiotic derived from cephamycin C but structurally and pharmacologically similar to the cephalosporins; used by injection. ... (05 Mar 2000) ...

cefsulodin
<chemical> A pyridinium-substituted semisynthetic, broad-spectrum antibacterial used especially for pseudomonas infections in debilitated patients. ... Pharmacological action: cephalosporins. ... Chemical name: Pyridinium, 4-(aminocarbonyl)-1-((2-carboxy-8-oxo-7-((phenylsulfoacetyl)amino)-5-thia-1-azabicyclo(4.2.0)oct-2-en-3-yl)methyl)-, inner …

ceftazidime
<chemical> Semisynthetic, broad-spectrum antibacterial derived from cephaloridine and used especially for pseudomonas and other gram-negative infections in debilitated patients. ... Pharmacological action: cephalosporins. ... Chemical name: Pyridinium, 1-((7-(((2-amino-4-thiazolyl)((1-carboxy-1-methylethoxy)imino)acetyl)amino)-2-carboxy-8-oxo-5 …

ceftazidime sodium
C22H21N6NaO7S2;a cephalosporin antibiotic especially effective against enterobacteria and species of Pseudomonas. ... (05 Mar 2000) ...

ceftizoxime
<chemical> A semisynthetic cephalosporin antibiotic which can be administered intravenously or by suppository. The drug is highly resistant to a broad spectrum of beta-lactamases and is active against a wide range of both aerobic and anaerobic gram-positive and gram-negative organisms. It has few side effects and is reported to be safe and ef …

ceftizoxime sodium
C13H12N5NaO5S2;a broad spectrum cephalosporin antibiotic similar to cefotaxime sodium. ... (05 Mar 2000) ...

ceftriaxone
<chemical> Broad-spectrum cephalosporin antibiotic with a very long half-life and high penetrability to usually inaccessible infections, including those involving the meninges, eyes, inner ears, and urinary tract. ... Pharmacological action: cephalosporins. ... Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-(((2-amino-4 …

ceftriaxone disodium
C18H16N8Na2O7S3;a semisynthetic parenteral cephalosporin antibiotic. ... (05 Mar 2000) ...

cefuroxime
<chemical> Broad-spectrum cephalosporin antibiotic resistant to beta-lactamase. It has been proposed for infections with gram-negative and gram-positive organisms, gonorrhoea, and haemophilus. ... Pharmacological action: cephalosporins. ... Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-(((aminocarbonyl)oxy)methyl)-7-(( …

cefuroxime axetil esterase
<enzyme> Catalyses the hydrolysis of cefuroxime axetil to cefuroxime; also acts (slowly) on p-nitrophenyl acetate and alpha-naphthyl acetate ... Registry number: EC 3.1.1.- ... (26 Jun 1999) ...

ceiling value
<pharmacology> The ceiling value is the maximum safe airborne concentration of a potentially toxic substance and is a concentration that should never be exceeded in an area where people are breathing. ... (26 Mar 1998) ...

cel
A unit of velocity; 1 cm per second. ... Origin: L. Celer, swift ... (05 Mar 2000) ...

celB endoglucanase
<enzyme> Do not confuse with celb protein, a component of the phosphoenolpyruvate sugar phosphotransferase system ... Registry number: EC 3.2.1.- ... (26 Jun 1999) ...

celectome
An obsolete term for an instrument, such as the harpoon, for obtaining a bit of tissue from the interior of a tumour for examination. ... Origin: G. Kele, tumour, + ektome, excision ... (05 Mar 2000) ...

celenteron
Synonym: primitive gut. ... Origin: G. Koilos, hollow, + enteron, intestine ... (05 Mar 2000) ...