plasma enzyme activities were relatively unchanged in immature rats , but aspartate aminotransferase ( ec 2.6.1.1 ) and lactate dehydrogenase ( ec 1.1.1.27 ) activities in old rats , in addition to fructose-diphosphate aldolase ( ec 4.1.2.13 ) activity in young adults , were initially elevated ( p less than 0.05 ) at the critical survival threshold ( 7,620 m ) .
C0030016
ec
C0022917
lactate dehydrogenase