Aninterpretation oftheserumalkaline phosphatase isoenzyme patterns inpatients with obstructive liver disease

understood andthe presence ofthis enzymein the bile remainsamystery. Alkaline phosphataseis found on the absorptive cell surfaces in manyorgansofthebody,andatransportfunctionforthisenzymeat the bile canalicular surface cannot there-fore be ruled out (Posen, 1967). Pekarthy and co-workers (1972) showed that the level of alkaline