an in vitro guinea pig heart preparation was used which allowed application of afterload to the right ventricle with unaltered coronary flow , and also permitted measurement of synthesis of myosin heavy chains ( hc ) and combined light chains ( lc ) by continuous perfusion with labelled amino acids ( 3h-lysine and/or 3h-phenylalanine ) of constant specific activity .
C0018787
heart
C0018827
ventricle