This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Enzymes), Subject name: Biochemistry
[{'content': 'Enzymes found in CSF: \nSelect and explain. \nA. GGT + ALP, B. ALP + CK-MB, C. CK + LDH, D. Deaminase and Peroxidase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. c. CK + LDH (Ref: Textbook of Medical Biochemistry by Dinesh Puri 2/e p154, 155)CK (Subunit composition BB) and LDH-3 (Subunit composition HHMM) are found in brain (CSF).Tissue Distribution of Lactate Dehydrogenase IsoenzymeIsoenzymeSubunit compositionTissuePercentage in serumLDH-1HHHHMyocardium, RBCQ30LDH-2HHHMMyocardium, RBCQ35LDH-3HHMMBrainQ, kidney20LDH-4HMMMSkeletal muscle, liverQ10LDH-5MMMMSkeletal muscle, liverQ5 Characteristics of CK IsoenzymesIsoenzymeSubunit compositionTissuePercentage in serumCKBBBrainQ30CKMBHeartQ35CKMMSkeletal muscleQ20', 'role': 'assistant'}]