It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
The evolution of the globin gene family in humans
Galactose gene expression
Bacterial Transcription
Gap gene expression patterns are activated by coordinate genes
Transcription of open and covered promoters
Chromatin states, gene content, and characteristic histone modifications