title: Precipitating and non-precipitating monoclonal antibodies against chicken avidin. Significance of epitope density.
abstract: 1. Monoclonal antibodies, generated against chicken avidin, were characterized in Ouchterlony's immunodiffusion. 2. Of the nine antibodies three were non-precipitable but six could form clear visible precipitation lines with egg-white avidin in agarose gel. 3. The latter six antibodies could be divided into two groups according to their reactive pattern in immunodiffusion. 4. Antibodies belonging to the first group precipitated both dimeric as well as tetrameric avidin molecules, while those of the second group precipitated only the tetrameric avidin molecules. 5. The relevance of these results to the structure of avidin as well as possibilities to use monoclonal antibodies and the immunodiffusion technique to compare the structure of avidin induced by different factors are discussed.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal; D000936:Antigen-Antibody Complex; D001360:Avidin / Q000276:immunology*; D002645:Chickens; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods; D000939:Epitopes / Q000032:analysis*; D005779:Immunodiffusion / Q000379:methods; D011863:Radioimmunoassay / Q000379:methods; D013329:Structure-Activity Relationship
chemical_list: D000911:Antibodies, Monoclonal; D000936:Antigen-Antibody Complex; D000939:Epitopes; D001360:Avidin