Tears of joy.Some body fluids are apparently safer than others. According to a study published in the March 16 Proceedings of the National Academy of Sciences The Proceedings of the National Academy of Sciences of the United States of America, usually referred to as PNAS, is the official journal of the United States National Academy of Sciences. , tears, saliva, and the urine of pregnant women all contain a protein that is able to kill HIV HIV (Human Immunodeficiency Virus), either of two closely related retroviruses that invade T-helper lymphocytes and are responsible for AIDS. There are two types of HIV: HIV-1 and HIV-2. HIV-1 is responsible for the vast majority of AIDS in the United States. in test-tube experiments. Researchers speculate that the protein, known as lysozyme lysozyme: see immunity. Lysozyme An enyme that was first identified and named by Alexander Fleming, who recognized its bacteriolytic properties. , may break down the outer membrane of the virus, The finding could be used to develop an anti-AIDS drug. |
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