He was interested in the research of Michael Sheetz and James Spudich, who had filmed, with a microscope, myosin-coated beads moving along actin filaments from skeletal muscle.
Ia tertarik dalam penelitian Michael Sheetz dan James Spudich, yang telah membuat film, dengan mikroskop, miosin-berlapis manik bergerak di sepanjang filamen aktin dari otot rangka.