Minority Scientists / Institutions There are many opportunities for minority scientists in both the Cancer Training Branch (CTB) (this website) and the Comprehensive Minority Biomedical Branch (CMBB). The NCI staff from both of these units work very closely together in advising and counseling potential applicants and helping them choose the best options for training and career development support. The CMBB also focuses on helping Minority Serving Institutions to become involved in Cancer Research. We hope you will make inquiries to either the CTB or the CMBB, but first explore the special programs in the CMBB by clicking on Minority Opportunities.