Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
External anatomy of the heart
Examples of four letter formats: (A) block style, (B) modified block style, (C) modified block style ...
Examples of four letter formats: (A) block style, (B) modified block style, (C) modified block style ...