antigen excess
Look at other dictionaries:
zone of antigen excess — in a precipitin reaction, the region of relatively high antigen concentration, in which soluble complexes are formed and the reaction is inhibited. Called also postzone … Medical dictionary
excess — That which is more than the usual or specified amount. antibody e. in a precipitation test, the presence of antibody in an amount greater than that required to combine with all of the antigen present. See prozone. antigen e. 1. in a precipitation … Medical dictionary
Prostate specific antigen — (PSA) is a protein produced by the cells of the prostate gland. PSA is present in small quantities in the serum of normal men, and is often elevated in the presence of prostate cancer and in other prostate disorders. A blood test to measure PSA… … Wikipedia
Precipitin — A precipitin is an antibody which can precipitate out of a solution. The Precipitin Reaction The precipitin reaction provided the first quantitative assay for antibody but is now made redundant by current technology and diagnostic techniques such … Wikipedia
Ouchterlony double immunodiffusion — Picture of an Ouchterlony double immunodiffusion plate, after immunodiffusion has taken place. In this, titre value of an antigen is quantified. The central well has an antibody, and the surrounding wells have decreasing concentration of the… … Wikipedia
Ouchterlony double immuno diffusion — (or agar gel immunodiffusion) is a simple, rather dated method which is still considered to be the gold standard for detection of ENAs (Extractable Nuclear Antigens).A gel plate is cut to form a series of holes in the gel (The geometry is… … Wikipedia
precipitin reaction — n the specific reaction of a precipitin with its antigen to give an insoluble precipitate * * * the formation of an insoluble precipitate by reaction of antigen and antibody; it occurs only with multivalent antigens and is dependent on… … Medical dictionary
Radial immunodiffusion — (or Mancini method, Mancini immunodiffusion, single radial immunodiffusion assay) is an immunodiffusion technique used in immunology to determine the quantity of an antigen by measuring the diameters of circles of precipitin complexes surrounding … Wikipedia
Mohamed Ghonim — Ghonim, Mohammed A محمد غنيم Born 17th March, 1939 Mansoura, Egypt Nationality Egyptian Fields … Wikipedia
postzone — post·zone (pōstґzōn) see zone of antigen excess, under zone … Medical dictionary
