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Author Question: Because of its location, the Sundarban is especially vulnerable to this natural hazard: A) ... (Read 17 times) |
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.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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.
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.