title: Induction of antigen-specific antibody responses by nonspecific T cell-derived helper factors.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000918:Antibody Specificity; D001402:B-Lymphocytes / Q000276:immunology*; D008213:Lymphocyte Activation; D006377:T-Lymphocytes, Helper-Inducer / Q000502:physiology*