Popis: |
Published reports regarding the increased melanin pigmentation following ultraviolet (UV) radiation suggest that an increase in tyrosinase activity and a numerical increase of functioning melanocytes are responsible for enhanced pigment production, Becker (1) ; Becker, Fitzpatrick and Montgomery (2) ; Bischitz and Snell (4) ; Bloch (5) ; Fitzpatrick, Becker, Lerner and Montgomery (6) ; Peck (11) ; Quevedo and Grahn (13) ; Quevedo and Smith (14) ; Quevedo, Szabo, Virks and Sinesi (15); Snell (16). |