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

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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

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Medication errors are three times higher among children and infants than with adults.

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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Formation of additional eyes in Drosophila caused by the abnormal expression of a master control gen Formation of additional eyes in Drosophila caused by the abnormal expression of a master control gen
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Video: Depolarization of the SA node, Action potentials of the myocardium & ANS effects

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