title: Alkaline phosphatase for immunocytochemical labelling: problems with endogenous enzyme activity.
abstract: Alkaline phosphatase may be used as a label for immunocytochemistry and can be demonstrated in tissue sections using the single step naphthol phosphate method. Endogenous enzyme activity may not be destroyed by fixation in formalin, formol alcohol, Carnoy's or Baker's solutions and should be inhibited before results are assessed. Either Bouin's solution or periodic acid followed by potassium borohydride are satisfactory inhibitor and do not adversely affect immunocytochemical results.
mesh_terms: D000085:Acetates; D019342:Acetic Acid; D000469:Alkaline Phosphatase / Q000032:analysis* / Q000037:antagonists & inhibitors; D000818:Animals; D005260:Female; D005404:Fixatives; D005557:Formaldehyde; D006801:Humans; D007124:Immunoenzyme Techniques; D010179:Pancreas / Q000201:enzymology; D010504:Periodic Acid; D010851:Picrates; D010920:Placenta / Q000201:enzymology; D051381:Rats
chemical_list: D000085:Acetates; D005404:Fixatives; D010851:Picrates; D010504:Periodic Acid; D005557:Formaldehyde; C026239:Bouin's solution; D000469:Alkaline Phosphatase; D019342:Acetic Acid