KRT19 and hydrops fetalis: To see if the VE-cadherin+ perineurial structures also undergo remodeling during hair cycle, we used Krt19-CreERT;tdTomato mice TM induced at PD17 and analyzed skin at telogen (PD20) and anagen (PD32) for changes in non-HF tdTomato+ structure morphology (Fig. 6f–i).