Abstract
IN histochemistry it is well known that an objection to the specificity of the periodic acid–Schiff reaction for mucopolysaccharides is due to the possible interference of some amino-acids. This objection is particularly important when the periodic acid–Schiff reaction is applied to serous glands, in which the secretion is essentially proteins. However, Junqueira et al. 1 found material giving a positive reaction in the parotids of many mammals, and concluded that substances other than proteins were present in the secretion of parotid gland. This observation opened up an interesting problem of cellular biology, regarding the possibility of a multiple secretion from serous glands.
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References
Junqueira, L. C. U., and Hirsch, G. C., Int. Rev. Cytol., 323 (1956).
Bignardi, C., Aureli, G., and Rizzotti, M., Riv. Istochem. Norm. Pat., 6, 167 (1960).
Blix, G., Hoppe-Seylers Z. physiol. Chem., 240, 43 (1936).
Quintarelli, G., Tsuiki, S., Hashimoto, Y., and Pigman, W., Biochem. Biophys., Research Comm., 2, 423 (1960).
Svennerholm, L., Acta chemica Scand., 12, 547 (1958).
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AURELI, G., FERRI, G. & CASTELLANI, A. Content of Sialic Acid in Serous Glands of Equines. Nature 190, 914 (1961). https://doi.org/10.1038/190914a0
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DOI: https://doi.org/10.1038/190914a0
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