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Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.