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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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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

External View of the Right Eye External View of the Right Eye
scanning electron micrograph showing an ovum (pink) released by the ovary at ovulation surrounded by scanning electron micrograph showing an ovum (pink) released by the ovary at ovulation surrounded by
External ear. External ear.
Contrast of ventilation and external and internal respiration. Contrast of ventilation and external and internal respiration.
Areas of the United States, Mexico, and Cuba will be affected by a rise of just 100 cm Areas of the United States, Mexico, and Cuba will be affected by a rise of just 100 cm
External auditory meatus External auditory meatus
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