FACS analysis of Lysotracker (B) dye fluorescence in RCS treated with the indicated FGF ligands (50 ng/mL) for 16h. Fluorescence intensities were expressed as % relative to vehicle (5% ABS). Mean +/- standard error of the mean (sem) of N=3 biological replicates/treatment. Analysis of variance one way (ANOVA) p<0.002 (B) Tukey's post hoc test ***p<0.0005. 