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 pigment is produced by melanocytes and melanosomes.Tyrosinase, an enzyme within melanosome cells, is released when stimulated by chemicals or UV rays, stimulates production and distribution of the melanin pigment and cause darkening of skin.elanin pigment is produced by melanocytes and melanosomes.Tyrosinase, an enzyme within melanosome cells, is released when stimulated by chemicals or UV rays, stimulates production and distribution of the melanin pigment and cause darkening of skin.