title: Immunological milestones in ontogeny.
abstract: Age-equivalence shows that certain differentiative events and the onset of various types of immunocompetence follow the same sequence in all species as lymphocytes emerge during development.
mesh_terms: D000375:Aging; D000818:Animals; D000917:Antibody Formation; D000941:Antigens; D006224:Cricetinae; D006084:Graft Rejection; D006168:Guinea Pigs; D006462:Hemolytic Plaque Technique; D006801:Humans; D007109:Immunity; D008213:Lymphocyte Activation; D008214:Lymphocytes / Q000276:immunology; D010835:Phytohemagglutinins / Q000494:pharmacology; D011817:Rabbits; D012756:Sheep; D016038:Skin Transplantation
chemical_list: D000941:Antigens; D010835:Phytohemagglutinins