There are more nerve cells in one human brain than there are stars in the Milky Way.
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The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
Cotton Pygmy Goose - male in Thailand
Female Breast
In addition to common schools, thousands of female seminaries were built between 1820 and 1850, many