GMNN and hydrops fetalis: IPA‐defined IL‐6 signaling also appeared to overlap in part with the cell cycle response score (Mki67, Gmnn, and Ccnd3) that, in naïve skin clusters, localized primarily to basal keratinocytes (IFE‐B) cells and, following irradiation, spread to HF, basal cells (IFE‐B, IFE‐BI), and SG cells (Appendix Fig S9A).