Immunological enhancement.
D000818:Animals; D000918:Antibody Specificity; D000937:Antigen-Antibody Reactions; D002648:Child; D006087:Graft vs Host Reaction; D006801:Humans; D007110:Immunity, Active; D007111:Immunity, Cellular; D007112:Immunity, Maternally-Acquired; D007165:Immunosuppression Therapy; D008213:Lymphocyte Activation; D008297:Male; D051379:Mice; D051381:Rats; D014181:Transplantation Immunology