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Author Question: A small percentage of people appear to be resistant to HIV infection, likely due to a gene that ... (Read 35 times) |
Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.
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.
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
There are 20 feet of blood vessels in each square inch of human skin.