Did you know?
IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
Did you know?
The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.
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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.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
The elephant raises its trunk as a sign of warning or to smell enemies or friends
Juvenile American alligator swimming, showing the distinctive yellow striping found on juveniles
Human embryonic stem cells forming rosettes, a sign of neural differentiation
Photo of a sign taken at an emissions test facility.
Kwashiorkor The edema in this child’s belly is a classic sign of kwashiorkor