Revisiting these HFs at mid/late anagen revealed that Oca2+ McSCs in the lower HG were able to translocate to the bulge/ORSup, the stem cell compartment of the HF and relocated to the HG by the next telogen, similar to upper HG Oca2+ McSCs (Fig. 3e,f). This evidence concerns the gene OCA2 and hydrops fetalis.