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Did you know?
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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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
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The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
![Major moons of Uranus in order of increasing distance (left to right), at their proper relative size](https://biology-forums.com/gallery/47/medium_12359_13_01_13_4_50_58.jpeg)
![Key anatomical features of Homo habilis include reduced facial size, a parabolic palate, and some br](https://biology-forums.com/gallery/47/medium_275510_22_02_15_5_56_51_2070597.jpeg)