SLs	solar lentigos
EDN1	endothelin-1
SCF	stem cell factor
mSCF	membrane-bound stem cell factor
KGF	keratinocyte growth factor
bFGF	basic fibroblast growth factor
GROα	growth-related oncogene α
GM-CSF	granulocyte macrophage colony stimulatory factor
EDNRB	endothelin B receptor
IL	interleukin
TNFα	tumor necrosis factor α
MAPK	mitogen activated protein kinase
MITF	microphthalmia associated transcription factor
NHMs	normal human melanocytes
PKA	protein kinase A
PKC	protein kinase C
ECE	endothelin converting enzyme
APS	L-ascorbate-2-phosphate 3 Na