( ii ) after the pretreatment of the hearts with 2.5 mm cacl2 , the responsiveness of the ( na+ , k+ ) -atpase activity to ouabain was studied : the sarcolemma from hypertrophied heart contains half as many low affinity forms of ( na+ , k+ ) -atpase for ouabain ( 35 % +/- 6 ) than in controls ( 80 % +/- 2 ) .
C0018787
hearts
C0018800
hypertrophied heart