http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. A new report suggests that the concentration of one human cytokine, interleukin 7 (IL-7), in the semen of HIV-1-infected men may be a key determinant of the efficiency of HIV-1 transmission to an uninfected female partner. In their study published February 7 in the Open Access journal PLOS Pathogens, a research group from the Eunice Kennedy-Shriver National Institute of Child Health and Human Development (NICHD) led by Leonid Margolis report that the increased IL-7 concentration in semen facilitates HIV transmission to cervical tissue ex vivo. http://medicalxpress.com/news/2013-02-hiv-exploits-human-cytokine-semen.html HIV & AIDS Thu, 07 Feb 2013 17:00:03 EST news279466658