Melanocytes are pigment-producing cells that originate from the dorsal portions of the
closing neural tube in vertebrate embryos. Similar to neurons, they are derived from …

Epidermal melanocytes are skin cells specialized in melanin production. Activation of the
melanocortin 1 receptor (MC1R) on melanocytes by α-melanocyte–stimulating hormone (α …

Cutaneous pigmentation or skin color is the body's natural protection against sun-induced
damage. Skin color is determined primarily by melanin, a biopolymer that is synthesized …

The multi-talented “guardian of the genome” p53 is fundamental to preventing tumor
development through the regulation of important cellular processes such as cell cycle arrest …

The choice to darken one's skin by tanning has gained increased popularity and social
acceptance in recent years. The opportunities to tan intentionally have paralleled the …

As minhas primeiras palavras vão para o Professor Doutor Serafim Guimarães
agradecendo o convite que me fez, quando eu era estudante de Medicina, para integrar o …