"Neoplasms, Experimental chemically induced." . . . . "National Cancer Institute (U.S.). Carcinogen Bioassay and Program Resources Branch." . . . . . . . . . . . . . . . . "Bioassay of picloram for possible carcinogenicity" . . . . . . . . . . . . "Picloram." . . "Picolinic Acids toxicity." . . "Herbicides toxicity." . .