however , an integrated project of long-term carcinogenicity bioassays , begun in our laboratory in 1976 and still continuing , has shown that benzene produces a variety of tumors in rats including zymbal gland carcinomas , carcinomas of the oral cavity , hepatocarcinomas , and possibly mammary carcinomas , lymphoreticular neoplasias , and other malignancies .
C0678222
mammary carcinomas
C0006826
malignancies