CD34 and psoriasis: To test this hypothesis, we first conducted FACS analyses to determine the proportion of the different HF‐SC subpopulations expressing CD34, CD49f, and Sca‐1 markers (Jensen et al, 2010) in the ear skin of the Co‐mT/mG and DKO*‐mT/mG mice during the psoriasis‐like progression (Appendix Fig S3A).