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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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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

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The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

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The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

An individual's performance can be limited by environmental conditions, such as temperature. Ac An individual's performance can be limited by environmental conditions, such as temperature. Ac
The underside of a male (top) and a female (bottom) individual of Pachygrapsus marmoratus, showing t The underside of a male (top) and a female (bottom) individual of Pachygrapsus marmoratus, showing t
Chimpanzees live in complex kin groups in which lifelong bonds and individual personalities play key Chimpanzees live in complex kin groups in which lifelong bonds and individual personalities play key
Generally, the total tax burden in the United States is much lower than that of other industrialize Generally, the total tax burden in the United States is much lower than that of other industrialize
Women have the role of kinkeeper in almost all cultures. This may cause them to react to stress by ... Women have the role of kinkeeper in almost all cultures. This may cause them to react to stress by ...
Vulnerability – Stress Model Vulnerability – Stress Model
Video: Cell mediated immune response to a viral infection Animation

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