Drug firms donate compounds for anti-HIV gel

[摘要] Motivated by positive results reported in this week's Nature, two drug companies have given away rights to two key compounds, so that they can be developed into gels that protect against human immunodeficiency virus (HIV). Such a gel could help many women to protect themselves, as they often find it difficult to get partners to use condoms, particularly in the developing world where men may disapprove of the practice. Experts say that a mocrobicide applied to the vagina before sex could save 2.5 millions lives in just three years.)