title: [Diffusible factors as activators of the primary immune response in vivo].
mesh_terms: D000818:Animals; D001854:Bone Marrow Cells; D002478:Cells, Cultured; D006460:Hemolysin Proteins / Q000096:biosynthesis; D000949:Histocompatibility Antigens Class II / Q000276:immunology*; D051379:Mice; D011817:Rabbits; D051381:Rats; D013154:Spleen / Q000166:cytology*; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D006460:Hemolysin Proteins; D000949:Histocompatibility Antigens Class II
vernacular_title: Factores difusibles como activadores de la respuesta inmune primaria in vivo.