SDS/PAGE of recombinant human cTnT and native rabbit cardiac Tn three components. Lane 1, rabbit skinned cardiac muscle; lane 2, recombinant human wild-type cTnT; lane 3, recombinant human ΔK210 cTnT; lane 4, native rabbit cTnT; lane 5, native rabbit cTnI, and lane 6, native rabbit cTnC. The gel was stained with Coomassie brilliant blue R-250.