Keywords: Li, chou-chi.jpg Laboratory of Cancer Prevention Center for Cancer Research National Cancer Institute Topics/Categories National Cancer Institute People Type B W Photo Source National Cancer Institute Bill Branson Photographer 268 1995-11 Reuse Restrictions None - This image is in the public domain and can be freely reused Please credit the source and/or author listed above Bill Branson Photographer PD-USGov-HHS-NIH Media from National Cancer Institute Visuals Online Images uploaded by Fæ |