Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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People about to have surgery must tell their health care providers about all supplements they take.
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There are 20 feet of blood vessels in each square inch of human skin.
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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
Structure of a chloroplast
The cell cycle and checkpoints
Normal red blood cells.
Visual tracking of a pendulum by a normal control subject (top) and three schizophrenics. (Adapted ...
Diagram of the heart showing normal conduction pathway.
Structure of the E. coli Tus protein, complexed with double-stranded DNA