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Did you know?

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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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Negative control of a repressible set of genes: function of the trp repressor and corepressor in reg Negative control of a repressible set of genes: function of the trp repressor and corepressor in reg
Dopamine and Reinforcement Dopamine and Reinforcement
Nonverbal communications convey strong, powerful messages that may be negative or positive. Nonverbal communications convey strong, powerful messages that may be negative or positive.
Number of positive, negative, and neutral images recalled by younger, middle-age, and older adults. ... Number of positive, negative, and neutral images recalled by younger, middle-age, and older adults. ...
Homeostasis and negative feedback as related to control of body temperature. Homeostasis and negative feedback as related to control of body temperature.
Positive and Negative Punishment Positive and Negative Punishment
Video: Fetal development - Weeks 9 to 38

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