Melanin are a group of black or dark brown pigments that are present in the hair, skin, and eyes of man. They may be produced to excess in cases of certain skin diseases and in melanomas. Research Melanin
The stratum basale is the deepest layer of the epidermis, consisting of a single row of columnar or cuboidal cells. The epidermal cells originate from this layer and new cells are continually being produced. Some of these cells make the proteinkeratin, which toughens them. Others produce melanin, the substance that gives skin colour. As the cells in this layer increase in number, they are pushed outward and become part of the stratum granulosum. Research Stratum Basale
Dihydroxyphenylalanine (dopa) is an intermediate in the natural synthesis of adrenaline and of the pigment melanin. In the nervous system, dihydroxyphenylalanine is converted first to dopamine and then to noradrenaline and then to adrenaline. Research Dihydroxyphenylalanine
The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
Abbreviations
Research Melanin
