[Influence of surfactant upon the induction of digestive tract tumors by MNNG].
D000818:Animals; D002294:Carcinoma, Squamous Cell / Q000139:chemically induced; D004067:Digestive System Neoplasms / Q000139:chemically induced*; D005260:Female; D008297:Male; D008769:Methylnitronitrosoguanidine; D011136:Polysorbates / Q000009:adverse effects; D051381:Rats; D013274:Stomach Neoplasms / Q000139:chemically induced*; D013501:Surface-Active Agents / Q000009:adverse effects*
D011136:Polysorbates; D013501:Surface-Active Agents; D008769:Methylnitronitrosoguanidine