title: A set theoretical approach to immunotaxonomy: analysis of species comparisons in modified Ochterlony plates.
mesh_terms: D000818:Animals; D000937:Antigen-Antibody Reactions / Q000145:classification*; D002645:Chickens; D003168:Complement Fixation Tests; D003201:Computers; D000882:Haplorhini; D006801:Humans; D005779:Immunodiffusion; D011817:Rabbits; D013045:Species Specificity