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The average adult has about 21 square feet of skin.

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All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

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Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Open space is found in a Lodgepole pine stand after thinning. Open space is found in a Lodgepole pine stand after thinning.
The Peary caribou is a relatively small and pale subspecies found in the tundra of far northern Nort The Peary caribou is a relatively small and pale subspecies found in the tundra of far northern Nort
The calcaneus spur found on the male's hind limb is used to deliver venom. The calcaneus spur found on the male's hind limb is used to deliver venom.
The yellow-winged darter, Sympetrum flaveolum, is a dragonfly found in Europe and mid and Northern C The yellow-winged darter, Sympetrum flaveolum, is a dragonfly found in Europe and mid and Northern C
Researchers have found that science instruction can be quite effective in grades 4 to 7. Researchers have found that science instruction can be quite effective in grades 4 to 7.
Many different types of labels may be found on packages containing hazardous materials. Clockwise ... Many different types of labels may be found on packages containing hazardous materials. Clockwise ...
Video: Structures that affect circulation - kidneys and blood volume and skeletal muscle pumping

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