of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. Scanning electron micrograph of the epidermal surface of the flatfish sole Parophrys detulus shows a labyrinth of surface ridges. Image from Fahrenbach, W., Knutsen, D.D. (1975). J. Invest. Dermatol. 65:39-44, reprinted by permission from Macmillan Publishers Ltd as Figure 41 from Chapter 2 (Specializations Of The Free Surface) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. A PDF copy of the accompanying chapter is available on the ASCB's BioEDUCATE website.