Vaccines prevent between 2.5 and 4 million deaths every year.
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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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Medication errors are three times higher among children and infants than with adults.
Phosphorus cycle in a lake ecosystem.
Gray squirrel with brownish color - taken in Cincinnati, OH