Mier P D, van den Hurk J J
Br J Dermatol. 1975 Nov;93(5):509-17. doi: 10.1111/j.1365-2133.1975.tb02243.x.
Four distinct peptide hydrolases (EC 3-4) have been characterized in guinea-pig epidermis; these are cathepsin B1, cathepsin C, cathepsin D and arylamidase. Their properties are consistent with those of lysosomal enzymes. Cathepsin E was not detected.