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Human touch stimulates 16 different types of nerve cells in the body
The human sense of touch is a complex system that integrates diverse sensations such as pain, temperature, and pleasant ...
WebMD10d
Blood Types
Most people have about 5 liters (1. 3 gallons) of blood. Your blood is made up of different kinds of cells that float in a fluid called plasma: Your blood type is classified according to the type ...