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Author Question: The phrase birds of passage refers to ______. (Read 133 times) |
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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.
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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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Excessive alcohol use costs the country approximately $235 billion every year.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.