Lack of initiating activity in mutagens which are not carcinogenic.
D000818:Animals; D002273:Carcinogens / Q000633:toxicity; D005260:Female; D008297:Male; D051379:Mice; D009153:Mutagens / Q000633:toxicity*; D009374:Neoplasms, Experimental / Q000139:chemically induced; D012878:Skin Neoplasms / Q000139:chemically induced*
D002273:Carcinogens; D009153:Mutagens