Horizontal Distribution of the Dopa-positive Melanocytes in the Nail Matrix**From the Department of Dermatology, Osaka City University Medical School, Abeno, Osaka, Japan.

Horizontal distribution of dopa-positive melanocytes in the normal nail matrix was studied. The number of the dopa-positive melanocytes was approximately 300 per square millimeter in the distal areas of the intermediate nail matrix. It was not possible to estimate melanocytes in proximal areas because the melanocytes of the latter areas were obscure and much weaker in dopa reaction