to determine the overall
expression patterns of epidermal (™E∫) and simple epithelial
(™S∫) keratins in this shark, we furthermore tested a panel of
monoclonal anti-keratin antibodies by immunofluorescence
microscopy of frozen tissue sections, and in immunoblots of
cytoskeletal preparations, demonstrating that immunodetection
of specific keratins is a convenient method to characterize
epithelial tissues in shark.