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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

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The human body produces and destroys 15 million blood cells every second.

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All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Illustration of an embolus floating in an artery. The embolus will become lodged in a blood vessel t Illustration of an embolus floating in an artery. The embolus will become lodged in a blood vessel t
Living in Space Living in Space
Red Blood Cells Red Blood Cells
Blood–brain barrier. Blood–brain barrier.
Clostridium difficile: (a) on blood agar and (b) scanning electron microscopy. Clostridium difficile: (a) on blood agar and (b) scanning electron microscopy.
International space station International space station
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