Sperm Prevents Ovarian Cancer SEPTEMBER 14, 2003 22:57 by Jin-Han Lee (likeday@donga.com) A medical team in the nation has found for the first time that male sperm has ingredients to kill ovarian cancer cells. As a result, some point out that male sperm may be the reason why sexually inactive women, whether single or married, are more likely to have ovarian cancer than sexually active women. In addition, the finding sets the stage for ovarian cancer treatment. Bae Seok-nyon, a gynecology professor at the medical school of Catholic University, and Park Lae-ok, a researcher, removed spermatozoon from sperm, extracted three...