title: Inactivation of thymus and marrow-derived lymphocytes by heterologous antilymphocyte serum (ALS).
mesh_terms: D000818:Animals; D000961:Antilymphocyte Serum; D001853:Bone Marrow / Q000276:immunology*; D001854:Bone Marrow Cells; D006736:Horses; D008214:Lymphocytes / Q000276:immunology*; D051379:Mice; D013950:Thymus Gland / Q000276:immunology*
chemical_list: D000961:Antilymphocyte Serum