Keywords: Azt (1).jpg A close-up of scientist's hands holding three test tubes The one on the left contains normal healthy t-lymphocytes notice the pellet on the bottom The middle vial has t-cells that have been infected with the AIDS virus HIV also known as HTLV-III; note the pellet has been destroyed since the cells have died The test tube on the right contains t-lymphocytes that were exposed to the AIDS virus but since they were protected by AZT the cells were not destroyed and the pellet stayed intact Topics/Categories Cancer Types -- AIDS-Related Science and Technology -- Laboratory Techniques/Equipment Type Color Photo Source National Cancer Institute John Crawford Photographer 2249 1986-09 Reuse Restrictions None - This image is in the public domain and can be freely reused Please credit the source and/or author listed above John Crawford Photographer PD-USGov-HHS-NIH Media from National Cancer Institute Visuals Online Images uploaded by Fæ Test tubes |