melanotic nevus oral The blue Figure 1 from Congenital melanocytic
Description
of course, that sometimes is not possible or practical

2018;97:e13279

However, this discovery also directly led to the development of PT-141, another melanocortin peptide that selectively binds to MC4 and has already extensively been researched for sexual health

Transactivation of the human apolipoprotein CII promoter by orphan and ligand-dependent nuclear receptors
