An Electron Microscope Study of Myofibril Formation in Embryonic Chick Skeletal Muscle


The formation of myofibrils in the developing leg muscle of the 12-day chick embryo was studied by electron microscopy. Myofilaments of two varieties, thick (160-170 A in diameter) and thin (60-70 A in diameter), which have been designated myosin and actin filaments, respectively, on the basis of their similarity to natural and synthetic myosin and actin… (More)


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