[Experimental trials of induction of chronic ulcer and cancer in the stomach].
D000818:Animals; D002908:Chronic Disease; D008748:Methylcholanthrene; D009374:Neoplasms, Experimental; D051381:Rats; D013274:Stomach Neoplasms / Q000139:chemically induced*; D013276:Stomach Ulcer / Q000139:chemically induced*
D008748:Methylcholanthrene