Upper panel, adjoining portions of two cells in the stratum spinosum of hamster cheek pouch epithelium shows desmosome junctions between two cells. Lower, a portion of the basal surface of a cell in the epidermis of a larval salamander Ambystoma punctatum shows hemi-desmosomes spaced at regular intervals. Figures 83 (upper, by J.T. Albright and M.A. Listgarten) and 84 (lower, by E. Hay) from Chapter 3 (Junctional Specializations) 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.