Langerhans Cells: Uptake of Tritiated Thymidine

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Science  28 Jul 1967:
Vol. 157, Issue 3787, pp. 439-440
DOI: 10.1126/science.157.3787.439


After irradiation of the skin of the rhesus monkey with ultraviolet light, there is temporary suppression of the proliferating activity of the epidermal cells, followed by some hyperplasia and a striking increase in synthesis of DNA by Langerhans cells. Since Langerhans cells can proliferate, they can no longer be considered to be worn-out melanocytes.