To examine the effect of post-CIA DPSC-CM application on hair regrowth in CYP-treated mice, we adjusted the previous model by delaying treatment initiation with the vehicle, N-CM, or H-CM until day 15 p.d, as illustrated in Fig. 5A. By this time, HFs with more severe toxic effects were already in the dystrophic catagen pathway. This evidence concerns the gene PPIG and Hand-foot syndrome.