The phrase "uncircumcised men" refers to males who have not undergone a surgical procedure called circumcision, which involves removing the foreskin of the penis. Full definition
In uncircumcised men Langerhans cells — immune cells that are primary targets for HIV transmission — «are more richly concentrated near the surface of the foreskin,» says Anthony Fauci, director of the U.S. National Institute of Allergy and Infectious Diseases in Bethesda, Md.. (scientificamerican.com)
Over the two year study period, both circumcised and uncircumcised men engaged in similar amounts of sexual activity. (mommyish.com)
In the new study, a research team at the Rakai Health Sciences Program in Uganda — in collaboration with researchers from the Johns Hopkins University Bloomberg School of Public Health in Baltimore and Makerere University in Uganda — conducted two clinical trials involving 3,393 uncircumcised men ages 15 to 49. (health.com)