The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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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.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Compartments within (a) animal and (b) plant cells
White-footed mouse
The nurse is using Standard Precautions to draw blood.
Muscle fibers consist of single, elongated, multinucleated cells that arise from the fusion