as a series of studies on postmortem changes in the fine structure of porcine muscle , activity of two mitochondrial marker enzymes , succinate dehydrogenase ( sdh ) and magnesium dependent adenosine triphosphatase ( mg-atpase ) , was measured and localized in cardiac , red and white muscles stored at 4 degrees c , -18 degrees c or -80 degrees c .
C0001477
magnesium
C0001473
atpase