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Hair analyses by scanning electron microscopy

Hair: function and structure

Hair fulfils versatile functions such as heat & light protection, moisture protection & regulation and camouflage.

In humans and mammals, hair is roughly composed of three layers:
From inside to outside the medulla, cortex and cuticle. The cuticle, also called the cuticle layer, consists of keratinized dead cells.

Graphic: @nmphotographer - / modified