title: Apparent resistance of the integument of the inverterbrate Lehmannia poireri to production of papillary tumors by a known chemical carcinogen.
abstract: Papillary tumors of the skin of the land invertebrate Lehmannia poireri (a gastropod) could not be induced by using a potent vertebrate carcinogen. With the same agent 7,12-dimethylbenz (a) anthracene papillary tumors can readily be induced in mice. The resistance of this invertebrate to a known vertebrate carcinogen is discussed and the ramifications are conjectured.
mesh_terms: D015127:9,10-Dimethyl-1,2-benzanthracene / Q000633:toxicity*; D000818:Animals; D001551:Benz(a)Anthracenes / Q000633:toxicity*; D004351:Drug Resistance; D008974:Mollusca / Q000187:drug effects*
chemical_list: D001551:Benz(a)Anthracenes; D015127:9,10-Dimethyl-1,2-benzanthracene