title: Letter: Skin tumors produced by systemic administration of chemical carcinogens.
mesh_terms: D015127:9,10-Dimethyl-1,2-benzanthracene / Q000633:toxicity*; D000818:Animals; D001551:Benz(a)Anthracenes / Q000633:toxicity*; D008748:Methylcholanthrene / Q000008:administration & dosage; D009374:Neoplasms, Experimental / Q000139:chemically induced; D051381:Rats; D012878:Skin Neoplasms / Q000139:chemically induced*
chemical_list: D001551:Benz(a)Anthracenes; D008748:Methylcholanthrene; D015127:9,10-Dimethyl-1,2-benzanthracene