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Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Defences against herbivory. Plants possess an array of unusual and powerful chemicals, including Defences against herbivory. Plants possess an array of unusual and powerful chemicals, including
Nurses possess a wide variety of experiences which they take into each patient encounter. Nurses possess a wide variety of experiences which they take into each patient encounter.
All living apes possess rotating, suspensory shoulders, including humans. All living apes possess rotating, suspensory shoulders, including humans.
Evolutionary Tree for Chordates Evolutionary Tree for Chordates
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