Keratin is not made of cells. It is a protein that is produced by specialized cells called keratinocytes. These cells are found in the epidermis, the outermost layer of skin. Keratinocytes produce keratin, which then forms tough, protective layers in the skin, hair, and nails.
Here's a breakdown:
- Keratin is a fibrous protein.
- Keratinocytes are specialized cells that produce keratin.
- Cells are the basic building blocks of living organisms.
So, while keratin is produced by cells, it is not made of cells itself. It's like saying a house is made of bricks - the bricks are the building material, but the house itself is not a brick.