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The longest a person has survived after a heart transplant is 24 years.

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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

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Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

The Grants and natural selection of beak size among the medium ground finch. The Grants and natural selection of beak size among the medium ground finch.
Examples of the results of sexual selection, a type of natural selection. Examples of the results of sexual selection, a type of natural selection.
Cells involved in nonspecific immunity in vertebrates. Cells involved in nonspecific immunity in vertebrates.
Cells involved in specific immunity in vertebrates. Cells involved in specific immunity in vertebrates.
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What is Immunity? What is Immunity?
Video: ACTH/Cortisol (glycogenolysis, protein catabolism, lipolysis and gluconeogenesis)

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