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Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Iron deficiency anemia blood cells. Iron deficiency anemia blood cells.
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Video: Cognitive development by Piaget (Preoperational stage or intelligence)

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