Colony formation assay
MaGFP,MaT1S,MP#2,Mel2,Mel3,Mel4,Mel11,Mel25,Mel33cells(1×102)were cultured in adherent conditions in complete medium on 6-well plates to allow colony formation.After seven days,colonies were washed with PBS,fixed in 3.7%(v/v)formaldehyde for 15 minutes,stained with 1%Toluidine blue 1% Borax for 5 minutes and washed with water.For quantification of survival cells,the staining was dissolved in 1% SDS and the absorbance at 570 nm was evaluated using an ELISA microplate reader.