The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
24 weeks old human fetus
human testis
Human chromosomes. (A) Female. (B) Male.
Human Body Parts
A wide variety of pathogens may live on or in the human body.