title: Changes in spleen morphology and lymphoid cell activity during tumor progression.
mesh_terms: D000818:Animals; D005260:Female; D005354:Fibrosarcoma / Q000139:chemically induced / Q000276:immunology / Q000473:pathology*; D007111:Immunity, Cellular; D008214:Lymphocytes / Q000276:immunology*; D008748:Methylcholanthrene; D051379:Mice; D008809:Mice, Inbred C3H; D012513:Sarcoma, Experimental / Q000139:chemically induced / Q000276:immunology / Q000473:pathology; D013154:Spleen / Q000276:immunology / Q000473:pathology*
chemical_list: D008748:Methylcholanthrene