Learn More About Adult Bicycles. Find the bike that's right for you. Whether you're cruising down city streets or taking on the roughest mountain terrain, choose a bicycle that matches your needs as a cyclist.
Dermal melanin is produced by melanocytes, which are found in the stratum basale of the epidermis.
Melanin /ËmÉlÉnÉªn/ (Greek: Î¼Î­Î»Î±Ï â melas, black, dark) is a broad term for a group of natural pigments found in most organisms (arachnids are one of the few groups in which it has not been detected). Melanin is produced by the oxidation of the amino acid tyrosine, followed by polymerization. The pigment is produced in a specialized group of cells known as melanocytes. There are three basic types of melanin: eumelanin, pheomelanin, and neuromelanin. The most common is eumelanin, of which there are two typesâbrown eumelanin and black eumelanin.