values for total lactate dehydrogenase ( ld , ec 1.1.1.27 ) activity in serum , ld isoenzymes 1 and 2 , and the ld 1:2 ratio in 25 patients with unstable angina were compared with the same variables in 25 patients whose angina was stable 24 , 48 , and 72 h after admission .
C0002965
unstable angina
C0002962
angina