RT Journal Article SR Electronic T1 Total CK activity and isoenzyme patterns in normal and neoplastic tissue of gastrointestinal tract. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 204 OP 206 DO 10.1136/jcp.35.2.204 VO 35 IS 2 A1 S H Tsung YR 1982 UL http://jcp.bmj.com/content/35/2/204.abstract AB Total creatine kinase (CK) activity and isoenzyme distribution were determined in normal and tumour of gastrointestinal (GI) tract. Total CK activity per gram wet tissue appeared to be markedly reduced in malignant tumour tissue, yet it was raised in benign tumour tissue. CK-BB was the predominant isoenzyme in both normal and tumour tissue of GI tract. Alteration of isoenzyme pattern was noted between the normal and tumour tissue. In one patient, macro-CK was found in tissue homogenate.