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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

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Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

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People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

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Dorsiflexion of the foot with direct pressure to bottom of foot with the thumbs. Dorsiflexion of the foot with direct pressure to bottom of foot with the thumbs.
What level of barometric pressure effects body? What level of barometric pressure effects body?
Tunicate larva (Ascidia), early metamorphosis. LM. Tunicate larva (Ascidia), early metamorphosis. LM.
Early growth of corn (Zea mays), a typical monocot. Early growth of corn (Zea mays), a typical monocot.
Video: Cleavage and Implantation Animation

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