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Increase in levels of estrogen and progesterone during pregnancy may affect intra-uterine HIV-1 injection through their effect on maternal immunocompetent cells. These hormones were examined for containing HIV-1 production from ACH-2 lymphocytes and U1 monocytes. Neither of the hormones has an effect on ACH-2, but with U1, the physiological concentrations (0.1 μg-0.1 ng) of progesterone and estrogen...
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