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Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

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.

Migration of naive and effector T lymphocytes Migration of naive and effector T lymphocytes
Origin of T cells, B cells, RBCs, WBCs, and platelets. Origin of T cells, B cells, RBCs, WBCs, and platelets.
Two lymphocytes that are reactive in a 19-year-old college student with infectious mononucleosis. ... Two lymphocytes that are reactive in a 19-year-old college student with infectious mononucleosis. ...
Two developmental paths for stimulated B lymphocytes Two developmental paths for stimulated B lymphocytes
If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ... If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ...
Lymphocytes Migrating through Membranes Lymphocytes Migrating through Membranes
Video: Ear Animation

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