Word: saliva
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...very small quantity of the AIDS virus can get into saliva. But it is < rapidly destroyed by the fluid's digestive enzymes. There has never been a documented case of HIV infection through saliva. So open-mouth kissing is considered a low-risk activity, but it is not absolutely safe...
...intercourse, but nothing to be casual about. The partner performing oral sex is more at risk because he or she comes into contact with vaginal or seminal fluids. The virus can pass from those fluids into cuts in the mouth. Those receiving oral sex are exposed only to saliva...
FORENSIC SCIENCE. Amplified by PCR, the DNA in a single sperm cell can link a suspect to a rape victim. Theoretically, a single epithelial cell found in saliva can be traced back to the person who, say, licked a stamp on a letter bomb. In California's San Mateo County, charges against a man arrested and jailed for a brutal rape were dropped in 1988 after a PCR test showed he could not have been the attacker. A year later another man was arrested in another rape case. Not only did a DNA marker make him a suspect...
...first mainstream film, The Elephant Man. Lynch's next project, the big-budget sci-fi movie Dune, was a critical and commercial disaster, but Blue Velvet brought him widespread critical / acclaim. A couple of aborted projects later (including a script for Steve Martin called One Saliva Bubble), Lynch is finishing a new film, Wild at Heart, starring Nicolas Cage and Laura Dern...
AIDS, by contrast, is transmitted by intimate sexual contact, exchange of genital secretions and transfusion of contaminated blood. It is not transmitted by mosquitoes or other insects, animals, tears, or saliva, glasss, food or even toilet seats...