Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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More than 4.4billion prescriptions were dispensed within the United States in 2016.
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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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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").
Supermassive Black Holes as Engines for Galactic Activity
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