E Quantification of hair follicles (HF) with BrdU+, proliferating cells in bulge of control (Ctr), Bcl-2EOE, K15ΔNLef1 and K15ΔNLef1;Bcl-2EOE mice (n=6 biological replicates; mean ± standard deviation (SD); **** p<0.0001, multiple t-test comparisons). nd: not detected. 