Look up: Rh-factor

1. 
   Rh factor
   Rh factor: An antigen found in the red blood cells of most people: those who have Rh factor are said to be Rh positive (Rh+), while those who do not are Rh negative (Rh-) Blood used in transfusions much match donors for Rh status as well as for ABO blood group, as Rh- patients will develop anemia if given R+ blood. Rh typing is also important durin ...
   Found on http://www.medterms.com/script/main/art.
   
   
2. 
   RH factor
   (= Rh factor) Rhesus factor: see rhesus blood group.
   Found on
   
   
3. 
   rh factor
   An antigen that may or may notbe present on the surface of human bloodcells. If a person's blood has the antigen, their blood type ispositive, if they do not, it is negative. The Rh factor isimportant mainly because if a woman who is Rh- conceives a child who is Rh+, themixing of their bloods in the placenta may provoke an immune reaction in the mo ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
4. 
   Rh factor
   any of numerous genetically determined antigens (agglutinogens) found on the surface of erythrocytes; there are at least eight different ones. If one of the factors is present in an individual's erythrocytes, the blood type is called Rh positive (D positive, Rh0); if the factor is absent, the blood type is called Rh negative (D negat...
   Found on http://www.mercksource.com/pp/us/cns/cns
   
   
5. 
   Rh factor
   (from the article `therapeutics`) Most individuals are Rh-positive, which means they have the D antigen; less than 15 percent of the population lack this antigen and are Rh-negative. ... ...between an Rh-negative mother and an Rh-positive fetus. If the mother has been sensitized (by previous exposure) to Rh-positive red blood cells, ......
   Found on http://www.britannica.com/eb/a-z/r/42
   
   
6. 
   Rh factor
   the antigen of the Rh blood group system. See Blood Groups Appendix. Syn: Rhesus factor
   Found on
   
   
7. 
   Rh factor
   Rh factor, protein substance present in the red blood cells of most people, capable of inducing intense antigenic reactions. The Rh, or rhesus, factor was discovered in 1940 by K. Landsteiner and A. S. Wiener, when they observed that an injection of blood from a rhesus monkey into rabbits caused an ...
   Found on http://www.infoplease.com/ce6/sci/A08417
   
   
8. 
   rhesus factor
   [n] - a blood group antigen possessed by Rh-positive people
   Found on http://www.webdictionary.co.uk/definitio
   
   
9. 
   rhesus factor
   Rh factor noun a blood group antigen possessed by Rh-positive people; if an Rh-negative person receives a blood transfusion from an Rh-positive person it can result in hemolysis and anemia
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
10. 
    Rhesus factor
    see Blood Groups Appendix. Syn: Rh factor
    Found on
    
    
11. 
    rhesus factor
    rhesus factor: see Rh factor.
    Found on http://www.infoplease.com/ce6/sci/A09181
    
    
12. 
    rheumatoid factor
    [n] - autoantibody that is usually present in the serum of people with rheumatoid arthritis
    Found on http://www.webdictionary.co.uk/definitio
    
    
13. 
    Rheumatoid factor
    Our Rheumatoid factor Main Article provides a comprehensive look at the who, what, when and how of Rheumatoid factor Rheumatoid factor: Rheumatoid factor is an antibody that is measurable in the blood. It is commonly used as a blood test for the diagnosis of rheumatoid arthritis. Rheumatoid factor is present in about 80% of adults (but a much lower ...
    Found on http://www.medterms.com/script/main/art.
    
    
14. 
    rheumatoid factor
    Complex of IgG and anti-IgG formed in joints in rheumatoid arthritis. Serum rheumatoid factors are more usually formed from IgM antibodies directed against IgG.
    Found on
    
    
15. 
    rheumatoid factor
    Complex of IgG and anti-igG formed in joints in rheumatoid arthritis. Serum rheumatoid factors are more usually formed from IgM antibodies directed against IgG. ... (18 Nov 1997) ...
    Found on http://www.mondofacto.com/facts/dictiona
    
    
16. 
    rheumatoid factor
    noun autoantibody that is usually present in the serum of people with rheumatoid arthritis
    Found on http://wordnet.princeton.edu/perl/webwn?
    
    
17. 
    Rheumatoid factor
    `Rheumatoid factor` (RF or RhF) is an antibody against the Fc portion of IgG, which is itself an antibody; rheumatoid factor and IgG join to form immune complexes which contribute to rheumatological diseases. Rheumatoid factor can be measured in patients with suspected rheumatoid arthritis (RA). Rheumatoid factor can be either Type 2 (monoclonal IgM to polyclonal IgG) or 3 (polyclonal IgM to polyclonal IgG) cryoglobulin.
    Found on http://en.wikipedia.org/wiki/Rheumatoid_
    
    
18. 
    rheumatoid factor
    (RF) antibodies directed against antigenic determinants on molecules of the IgG class of immunoglobulins, found in the serum of about 80 per cent of patients with classic or definite rheumatoid arthritis, but in only about 20 per cent of patients with juvenile rheumatoid arthritis. Rheumatoid factors may be immunoglobul...
    Found on http://www.mercksource.com/pp/us/cns/cns
    
    
19. 
    rheumatoid factor
    (from the article `joint disease`) ...reactions play an important role in the causation of rheumatoid arthritis. The blood of approximately 80 to 90 percent of persons with rheumatoid ... ...reaction against the body`s own tissues, and an autoantibody is an antibody that attacks components of the body rather than invading ... One the...
    Found on http://www.britannica.com/eb/a-z/r/43
    
    
20. 
    Rheumatoid factor
    An autoantibody (usually IgM) which reacts with the individual's own IgG. Present in rheumatoid arthritis.
    Found on http://www.microbiologybytes.com/iandi/I
    
    
21. 
    rho factor
    <cell biology> Protein factors found in prokaryotes, especially E. Coli, involved in the termination of transcription. Mutations in rho may cause the RNA polymerase to read through from one operon to the next. ... (23 Aug 1998) ...
    Found on http://www.mondofacto.com/facts/dictiona
    
    
22. 
    Rho factor
    A `Ã?Â? factor` (`rho factor`) is a protein found in prokaryotes, especially `E. coli`, involved in the termination of transcription. This is done by dissociating the ternary transcription complex at the termination of a gene.
    Found on http://en.wikipedia.org/wiki/Rho_factor
    
    
23. 
    rho factor
    a termination factor that releases RNA from the DNA template; a bacterial protein that is an ATP-dependent helicase. Syn: factor
    Found on