a 74-year-old man with myxedema and hypothermia had increased activities in plasma of creatine kinase ( ck ; ec 2.7.3.2 ) , aspartate aminotransferase ( ast ; ec 2.6.1.1 ) , and lactate dehydrogenase ( ld ; ec 1.1.1.27 ) and increased proportions of ck-mb ( up to 20 % of total ck ) and ld1 isoenzymes , but no clinical or investigational evidence of associated myocardial infarction .
C0030016
ec
C0022917
lactate dehydrogenase