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Clinical Chemistry|January 1, 1979
Determination of serum aminotransferases: activation by pyridoxal-5'-phosphate in relation to substrate concentrationJ C Hafkenscheid, C C DijtClinical Chemistry|October 1, 1984
Kits for enzyme determinations compared: relation between composition and qualityF P Peters, J C HafkenscheidClinica Chimica Acta; International Journal of Clinical Chemistry|November 15, 1975
An enzymic method for the determination of the glycine/taurine ratio of conjugated bile acids in bileJ C Hafkenscheid, M P HectorsClinical Chemistry|January 1, 1986
Effects of temperature on measurement of aspartate aminotransferase and alanine aminotransferase in commercial control seraJ C Hafkenscheid, B E KohlerJournal of Clinical Chemistry and Clinical Biochemistry. Zeitschrift Fur Klinische Chemie Und Klinische Biochemie|July 1, 1985
A continuous method for the determination of leucine aminopeptidase in human serum with L-leucinamide as substrateJ C Hafkenscheid, B E KohlerClinical Chemistry|January 1, 1984
Influence of substrate concentration on the activation of transketolase, aspartate aminotransferase, and glutathione reductase by coenzymesJ C Hafkenscheid, C M van DijkClinical Chemistry|January 1, 1988
Two dry-reagent systems evaluated for determinations of enzyme activitiesJ C Hafkenscheid, J van der Ven-JongekrijgScandinavian Journal of Clinical and Laboratory Investigation|September 1, 1989
Comparison of two methods for the determination of the isoenzymes of alpha-amylase in serum and urineJ C Hafkenscheid, M Hessels, F M WetzelsEnzyme|January 1, 1983
Stability test of six enzymes for internal quality controlJ C Hafkenscheid, J van der Ven-JongekrijgClinica Chimica Acta; International Journal of Clinical Chemistry|May 29, 1987
Apoenzyme content of serum aminotransferases in patients with a renal allograft treated with cyclosporine A and azathioprineJ C Hafkenscheid, J G Rosier, C M van DijkPageof 8