highly purified fractions of sarcoplasmic reticulum ( sr ) were prepared from chicken pectoralis muscles ( saito , a. , seiler , s. , chu , a. , and fleischer , s. ( 1984 ) j. cell biol . 99 , 875-885 ) and analyzed for the presence of creatine kinase ( ck ) .
C0036226
sarcoplasmic reticulum
C0007634
cell