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...
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2. RH factor
   (= Rh factor) Rhesus factor: see rhesus blood group.
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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...
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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...
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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, ......
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6. Rh factor
   Type: Term Definitions: 1. the antigen of the Rh blood group system. See Blood Groups Appendix. Synonyms: Rhesus factor
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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 ...
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8. rhesus factor
   [n] - a blood group antigen possessed by Rh-positive people
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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
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10. Rhesus factor
    Type: Term Definitions: 1. see Blood Groups Appendix. Synonyms: Rh factor
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11. rhesus factor
    rhesus factor: see Rh factor.
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12. rhesus factor
    Group of antigens on the surface of red blood cells of humans which characterize the rhesus blood group system. Most individuals possess the main rhesus factor (Rh+), but those without this factor (Rh-) produce antibodies if they come into contact with it. The name comes from rhesus monkeys, in whose blood rhesus factors were first found. I...
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13. rheumatoid factor
    [n] - autoantibody that is usually present in the serum of people with rheumatoid arthritis
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14. 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 i...
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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.
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16. 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) ...
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17. rheumatoid factor
    noun autoantibody that is usually present in the serum of people with rheumatoid arthritis
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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...
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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...
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20. Rheumatoid factor
    An autoantibody (usually IgM) which reacts with the individual's own IgG. Present in rheumatoid arthritis.
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21. Rheumatoid factor
    `Rheumatoid factor` (RF or RhF) is an autoantibody (antibody directed against an organism`s own tissues) most relevant in accessdate=2011-06-21-->--> It is an antibody against the Fc portion of IgG, which is itself an antibody. RF and IgG join to form immune complexes that contribute to the disease ...
    Found on http://en.wikipedia.org/wiki/Rheumatoid_
    
    
22. 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) ...
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23. rho factor
    Type: Term Definitions: 1. a termination factor that releases RNA from the DNA template; a bacterial protein that is an ATP-dependent helicase. Synonyms: ρ factor
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24. Rho factor
    A `ρ factor` (`Rho factor`) is a prokaryotic protein involved in the termination of transcription. Rho factor is an essential transcription protein in prokaryotes. In Escherichia coli, it is a ~275 kD hexamer of identical subunits. Each subunit has an RNA-binding domain and an ATP-hydrolys...
    Found on http://en.wikipedia.org/wiki/Rho_factor