western blots performed on intact myocardial preparations demonstrated that tnt1 , the cardiac isoform with the slowest electrophoretic mobility , was expressed prominently in the immature hearts , in addition to tnt2 , tnt3 , and tnt4 , but tnt1 was not evident in the 3-month and 6-month postnatal hearts .
C0027061
myocardial
C0018787
hearts