Periodic acid-Schiff (PAS) stain
The periodic acid-Schiff (PAS) stain is a histochemical stain that specifically labels carbohydrate in tissue sections. PAS is more precise than a conventional stain that relies on simple charge, since it localizes unique chemical groups, in this case carbohydrate. The reaction with carbohydrate produces a magenta color as seen in this section of liver, where the glycogen deposits in hepatocytes stain positively with PAS. Liver 1000x
Glycogen
The PAS stain is a histochemical method, which is used to specifically localize carbohydrate in tissue sections. The reaction with carbohydrate produces a magenta color. As seen in this section of liver, the PAS stain reveals the glycogen deposits in hepatocytes. 1000x
Nuclei
The PAS stain is a histochemical method, which is used to specifically localize carbohydrate in tissue sections. The reaction with carbohydrate produces a magenta color. As seen in this section of liver, the PAS stain reveals the glycogen deposits in hepatocytes. 1000x
Cytoplasm
The PAS stain is a histochemical method, which is used to specifically localize carbohydrate in tissue sections. The reaction with carbohydrate produces a magenta color. As seen in this section of liver, the PAS stain reveals the glycogen deposits in hepatocytes. 1000x
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