ENZYMATIC DIGESTION IN THE CYTOCHEMICAL DEMONSTRATION OF GLYCOGEN

Abstract
Mounted ultrathin sections of rat fetal gastric mucosa and liver tissue, fixed in osmium tetroxide or glutaraldehyde and embedded in epoxy resin, are suitable for the cytochemical demonstration of glycogen by staining either with lead or by the periodic acid-thiosemicarbazide procedure. Enzymatic digestion with saliva or α-amylase can be performed on mounted sections of similarly treated tissues for the selective removal of glycogen prior to staining.