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Author Question: An estimated 99.85 percent of the mass in the solar system is concentrated in ________. A) ... (Read 10 times) |
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The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
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The human body produces and destroys 15 million blood cells every second.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.