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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).

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In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Gap junctions between adjacent cells Gap junctions between adjacent cells
Embryonic cells form the placenta Embryonic cells form the placenta
pH Scale pH Scale
Receptive Fields of Color-Sensitive Ganglion Cells Receptive Fields of Color-Sensitive Ganglion Cells
Recognition of conformational epitopes by B cells. Recognition of conformational epitopes by B cells.
A commercially available DNA microarray, called a GeneChip, marketed by Affymetrix, Inc A commercially available DNA microarray, called a GeneChip, marketed by Affymetrix, Inc
Video: Bone processes - resorption and deposition, remodeling and response to stress in adult bones

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