Rape Test detects Y-chromosome

New Scientist:" A test that can prove a woman has been raped even if no sperm are found. After the trauma of rape, women who report it have to undergo a medical examination to look for sperm. But the test can fail, and as a result the woman's claim to have been raped may not be believed. Now a French study has confirmed that a back-up test can detect the male Y chromosome even if no sperm are found. The standard test, in which technicians use microscopes to look for sperm in vaginal, oral or anal swabs, is very sensitive. But an attack by a man will usually leave traces of skin cells, which will carry the telltale Y chromosome. These chromosome can be detected even if there's only one male cell for every 5000 female cells. The method has already helped convict rapists I know this is not something people like to read about, but just the fact that medical-science has advance to this stage is something to me, I hope you agree."