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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

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Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

The biconcave disk shape of erythrocytes (red blood cells). The biconcave disk shape of erythrocytes (red blood cells).
Shape of the spleen. Shape of the spleen.
The “Flat Head” (Chinook) Indians acquired their name through shaping in infancy, as shown in a diag The “Flat Head” (Chinook) Indians acquired their name through shaping in infancy, as shown in a diag
Five layers or sheaths called koshas in Ayurvedic philosophy. Five layers or sheaths called koshas in Ayurvedic philosophy.
Outline of the b-oxidation of fatty acids Outline of the b-oxidation of fatty acids
The nucleus is bounded by a double membrane called the nuclear envelope The nucleus is bounded by a double membrane called the nuclear envelope
Video: Role of ATP in muscle movement

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