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New facts about AIDS

August 7 2007

25 years took a rocket scientist to figure out a way of oral transmission of HIV that causes AIDS. According to researchers from the National Institutes of Health, the process of virus infection occurs through the amygdala.

On the surface of the tonsils have receptor CXCR4, through which the virus connects to infect cells and transmit their genetic material. This molecule - one of the first tested a new therapy to treat the infection. The surface of the gums, in turn, is covered with molecules of another type, the so-called keratin, which can thicken the wall of the gums and act as a barrier.

Until now it was believed that oral transmission of HIV is possible only when severely damaged gums. However, this explanation is hard to believe, since it is proved that saliva has a strong antiviral effect. HIV is not transmitted by drinking from the same glass, there is a single instrument, or kissing.

In this regard, many physicians doubted the words of some infected people who claimed that they did not engage in sexual intercourse with penetration without protection, and cancel it on the desire to hide - especially men - the fact that they engaged in anal sex. Now, however, their bias debunked.

Discovery was, for many experts occasion to recall that a condom must be used not only in sexual intercourse with penetration - vaginal or anal, the condom is recommended, and oral sex.

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