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The average office desk has 400 times more bacteria on it than a 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.

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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

The age structure of human populations in West Africa and Western Europe, as of 2000. The age structure of human populations in West Africa and Western Europe, as of 2000.
The small-scale distribution of different tree species in a Douglas-fir forest is determined by both The small-scale distribution of different tree species in a Douglas-fir forest is determined by both
human anatomy human anatomy
Modern Human Fossil Sites in the Old World Modern Human Fossil Sites in the Old World
The traditional human karyotypes derived from a normal female and a normal male The traditional human karyotypes derived from a normal female and a normal male
The traditional human karyotypes derived from a normal female and a normal male The traditional human karyotypes derived from a normal female and a normal male
Video: Wound Repair Animation

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