title: Antitumor immunity in the Shope papilloma-carcinoma complex. IV. Search for a transmissible factor increasing the frequency of tumor regression.
mesh_terms: D000818:Animals; D005260:Female; D008297:Male; D009365:Neoplasm Regression, Spontaneous; D009374:Neoplasms, Experimental / Q000276:immunology; D027383:Papillomaviridae / Q000276:immunology*; D011817:Rabbits; D014412:Tumor Virus Infections / Q000276:immunology*