Fig. 7. Absence of Cypher-1 in skinned cardiac myofibrils. Left Panel: Coomassie Blue-stained SDS-PAGE gel of intact (in) and Triton X-100 skinned (sk) rat ventricular myocytes. Protein loads were 20 µg (left two lanes) and 10 µg (right two lanes). Right panel: Western blot of same samples as in left panel. Arrowheads mark the mobility of Cypher-1.