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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Relationship between body size and seed size in Galapagos finch species Relationship between body size and seed size in Galapagos finch species
Scale used to measure pupil size in millimeters. Scale used to measure pupil size in millimeters.
Ancient Warming Shrunk Horses to Housecat Size Ancient Warming Shrunk Horses to Housecat Size
Effect of stimulus strength on size of graded potential. Effect of stimulus strength on size of graded potential.
Portion Sizes Who says you shouldn’t eat with your hands? Portion Sizes Who says you shouldn’t eat with your hands?
Doty's data show a very rapid drop in late adulthood in the ability to identify smells Doty's data show a very rapid drop in late adulthood in the ability to identify smells
Video: Griffith's experiments

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