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Immunodiffusion is a laboratory technique used to detect and quantify antigens and antibodies by observing their interactions within a gel medium. [1] This technique involves the diffusion of antigens and antibodies through a gel, usually agar , resulting in the formation of a visible precipitate when they interact.
Immunoelectrophoresis is a general term describing many combinations of the principles of electrophoresis and reaction of antibodies, also known as immunodiffusion. [1] Agarose as 1% gel slabs of about 1 mm thickness buffered at high pH (around 8.6) is traditionally preferred for electrophoresis and the reaction with antibodies. The agarose was ...
Radial immunodiffusion (RID), Mancini immunodiffusion or single radial immunodiffusion assay, is an immunodiffusion technique used in immunology to determine the quantity or concentration of an antigen in a sample.
Ouchterlony double immunodiffusion (also known as passive double immunodiffusion) is an immunological technique used in the detection, identification and quantification of antibodies and antigens, such as immunoglobulins and extractable nuclear antigens.
Plasmodium Glutamate dehydrogenase (pGluDH) separated by counterimmunoelectrophoresis [1]. Counterimmunoelectrophoresis is a laboratory technique used to evaluate the binding of an antibody to its antigen, it is similar to immunodiffusion, but with the addition of an applied electrical field across the diffusion medium, usually an agar or polyacrylamide gel.
Basic concept of Primary Immunofluorescence: An antibody with a conjugated fluorophore, that is specifically bound to an epitope on the target molecule.. Primary (direct) immunofluorescence (DIF) uses a single antibody, conjugated to a fluorophore.
A schematic of a complement fixation test. The complement fixation test is an immunological medical test that can be used to detect the presence of either specific antibody or specific antigen in a patient's serum, based on whether complement fixation occurs.
The test uses immunodiffusion. A strip of filter paper impregnated with diphtheria antitoxin is buried just beneath the surface of a special agar plate before the agar hardens. Strains to be tested are streaked with known positive and known negative toxigenic strains on the agar's surface in a line across the plate, and at a right angle to the ...