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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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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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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

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Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Germination of grass seeds involves mobilization of stored reserves Germination of grass seeds involves mobilization of stored reserves
The response of hair cells to mechanical stimulation. The response of hair cells to mechanical stimulation.
Sprain. A sprain involves damage to one or more ligaments, and is categorized into three degrees of Sprain. A sprain involves damage to one or more ligaments, and is categorized into three degrees of
Edward Bellamy, author of the utopian novel Looking Backward (1888) Bellamy’s socialism worried many Edward Bellamy, author of the utopian novel Looking Backward (1888) Bellamy’s socialism worried many
Niche: An individual’s ecological role Niche: An individual’s ecological role
A lesion called a plaque in the brain of an individual with Alzheimer disease. A ring of degeneratin A lesion called a plaque in the brain of an individual with Alzheimer disease. A ring of degeneratin
Video: Oxygen transport: association and dissociation & Factors that affect hemoglobin's saturation with O2

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