title: Background data on tumor incidence in control animals (Syrian hamsters).
mesh_terms: D000818:Animals; D001681:Biological Assay; D006224:Cricetinae / Q000502:physiology*; D008647:Mesocricetus / Q000502:physiology*; D009369:Neoplasms / Q000453:epidemiology / Q000662:veterinary*; D009374:Neoplasms, Experimental / Q000139:chemically induced; D051381:Rats / Q000502:physiology