Summary
Acid phosphatase, non-specific esterase and β-glucuronidase have been localised in the midgut epithelium of three species of insect using naphthol esters as substrates and triphenyl-p-amino-phenethyl lead as coupling salt. In all three species acid phosphatase and β-glucuronidase appear to be confined to primary and secondary lysosomes. Non-specific esterase activity was demonstrated within membrane-enclosing bodies in all three species, associated with lipid droplets in T. molitor and C. morosus and with an unidentified intranuclear structure in C. morosus.
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Beadle, D.J., Livingston, D.C. & Read, S. Ultrastructural localisation of acid phosphatase, non-specific esterase and β-glucuronidase in the midgut epithelium of Tenebrio molitor, Schistocerca gregaria and Carausius morosus . Histochemie 28, 243–249 (1971). https://doi.org/10.1007/BF00305681
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DOI: https://doi.org/10.1007/BF00305681