Colorized scanning electron micrograph of scales on human hair. Hair is made of newly produced cells that are pushed near the bulb. As they mature, they are pushed up to the surface where they die and their cytoplasm is replaced with the protein keratin.
Credit
Ryder-Jason Burns
Dimensions
3649 x 2438 pixels
Print Size @ 300 dpi
12 x 8 inches / 31 x 21 cm