Abbott Prism HIV O As well as assay approved by FDA FDA Approves Donor Screening Check for Antibodies to HIVThe U. S. Food and Drug Administration today announced acceptance of the Abbott Prism HIV O Plus assay, as a screening device designed to detect the current presence of specific antibodies to HIV. The assay can be one of five assays that operate on the fully automated Abbott Prism System. There are two types of HIV. HIV type 1 includes various subgroups, including group M, the most typical subgroup of the virus in the United States, and group O, found in Cameroon and the areas of West Africa primarily.It’s long been known that a mutation in the BRAF gene causes moles to start growing, but it wasn’t understood why they end growing. The BRAF mutation that stimulates the initial growth of moles also stimulates the creation of a tumor suppressor proteins, p15, which ultimately functions as a powerful brake on additional cell division, research senior author Dr. Todd Ridky, an associate professor of dermatology at the University of Pennsylvania, explained in a university news release.