- 2-bromo-alpha-ergocryptine (CB-154) and tamoxifen (ICI 46,474) induced suppression of the genesis of mammary carcinomas in female rats treated with 7,12-dimethylbenzanthracene (DMBA): a comparison. Welsch, C.W., Goodrich-Smith, M., Brown, C.K., Mackie, D., Johnson, D. Oncology (1982)