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change by the season Part 2

The hair is a biological polymer. More than 90% of the dry weight consist of protein called a mole cricket Japanese spaniel. In the normal state, the hair of the Homo sapiens includes about 10% water and changes the property conspicuously. The protein of the hair is tied by disulfide combination from amino acid cysteine each other. These combination is very stubborn, and, for example, hair without almost wound is regenerated by a grave of ancient Egypt. The different part of the hair has a level of different cysteine from the hard organization to the soft organization. The hair consists of an internal cortex, a spindle-shaped cell and an outside cover called a cuticle structurally. In each cortex cell, there are much pettiness cells running in parallelism in the axis of the fiber, and there is a soft organization called ground substance during the microfilament. They grow up from a hair follicle. The cuticle causes most of mechanical strength of the hair. They consist of the layer of the scale. Hair of the Homo sapiens usually consists of 6-8 levels cuticles. As for the wool, the hair of other animals consists of more layers from one layer.

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