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Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

The wolf spider, Lycosa godeffroyi, is common in many areas of Australia. In this family of spiders, The wolf spider, Lycosa godeffroyi, is common in many areas of Australia. In this family of spiders,
Normal development of posture and spinal curves. (A) Toddler: Protruding abdomen; lumbar lordosis. ( Normal development of posture and spinal curves. (A) Toddler: Protruding abdomen; lumbar lordosis. (
a Hyenas and other scavengers may have competed with early hominins for access to carcasses. a Hyenas and other scavengers may have competed with early hominins for access to carcasses.
Prenatal Brain Development Prenatal Brain Development
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Earth’s Early Atmosphere Earth’s Early Atmosphere
Video: Fetal development - Weeks 9 to 38

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