Testosterone is also the hormone that aids single-mindedness and helps avoid fatigue.

睾酮还有助于专注力和避免疲劳。

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The bad news: A Harvard University team discovered that the virus was able to outsmart another AIDS vaccine with a single mutation.

FORBES: Drug Companies Target AIDS

Next week will also see the release of a celebrity fundraising single for victims of Aids in Africa, and for victims of the terror attacks of 11 September in New York.

BBC: Stars release Damilola tribute single

There are not enough single pill versions of drugs, there are very few aids medicines for children and technical problems with supplies persist.

BBC: HIV is a major problem in the developing world