There are 20 feet of blood vessels in each square inch of human skin.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
Cellular changes associated with short-term and long-term memory in the sea slug.
A test for iconic sensory memory
Memory saver. The part numbers represent components from Radio Shack®.