development of aberrant myoblasts and giant cells : -- round myoblasts : cells with increased cytoplasm containing thin and thick filaments , primitive z-lines , which were not organized into sarcomeres as well as unaligned sarcomeres , -- large round myoblasts and giant cells : cells with abundant cytoplasm containing irregularly distributed thin and thick filaments , primitive z-lines and haphazardly arranged sarcomeres , which did not appear as cross-striations by light microscopy .
C0010834
cytoplasm
C0007634
cells