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Author Question: Mark sustained a head injury during a car accident. After the accident, Mark had no memory of color. ... (Read 119 times) |
Illicit drug use costs the United States approximately $181 billion every year.
There are 60,000 miles of blood vessels in every adult human.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Blood is approximately twice as thick as water because of the cells and other components found in it.
Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).