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Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

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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 most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

An Australian Shepherd-Beagle mix displaying mastery of the "sit" command An Australian Shepherd-Beagle mix displaying mastery of the "sit" command
Overview of RNA processing and posttranscriptional gene control Overview of RNA processing and posttranscriptional gene control
Feedback control of the adrenal cortex. Feedback control of the adrenal cortex.
Concentric double-pipe heat exchanger for counter-current flow Concentric double-pipe heat exchanger for counter-current flow
To reverse the direction of operation, the polarity of the current through the motor is reversed. To reverse the direction of operation, the polarity of the current through the motor is reversed.
Control of Respiration Control of Respiration
Video: Mendel's Pea Experiment

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