|
|
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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.
Blood is approximately twice as thick as water because of the cells and other components found in it.
Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
![This 1795 engraving of a Stamp Act protest delineates a class division. The three British Tories—one](https://biology-forums.com/gallery/47/medium_374628_16_08_15_9_46_08_222382177.jpeg)
![L. Frank Baum, author of The Wonderful Wizard of Oz (1900) and a fan of William Jennings Bryan, perh](https://biology-forums.com/gallery/47/medium_376716_26_08_15_11_16_37_22450198.jpeg)