Histochemical Studies on the Skin**From the Department of Anatomy, Kyoto University, School of Medicine, Kyoto, Japan and the Department of Dermatology, Tufts University School of Medicine, Boston, Massachusetts, U.S.A.This investigation was supported by a research grant from the Rockefeller Foundation (GA MNS 60236) and by Public Health Service Research Grant GM-10299 from the National Institute of General Medical Sciences.