Melanin is produced by specialized cells called melanocytes. These cells are found in various parts of the body, including:
- Skin: Melanocytes reside in the basal layer of the epidermis, which is the outermost layer of skin. They produce melanin, which gives skin its color and protects it from UV radiation.
- Hair: Melanocytes are also present in the hair follicles, where they contribute to hair color.
- Eyes: Melanocytes in the iris and choroid of the eye are responsible for eye color.
- Adrenal gland: While not the primary source of melanin, the adrenal gland, specifically the zona reticularis, contains melanin.
- Brain: Melanin is found in the medulla and pigment-bearing neurons within areas of the brainstem, such as the locus coeruleus.
Therefore, while melanocytes are the cells responsible for producing melanin, various glands contain melanin or contribute to its production in different ways.