Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
Did you know?
Approximately 25% of all reported medication errors result from some kind of name confusion.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
Did you know?
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
The arrangement of cells in the retina.
BLOOD CELLS
Examples of visual fields of simple cortical cells.
