title: Microfilament bundles. I. Formation with uniform polarity.
mesh_terms: D000818:Animals; D002462:Cell Membrane / Q000648:ultrastructure; D003593:Cytoplasm / Q000648:ultrastructure*; D003599:Cytoskeleton / Q000187:drug effects / Q000648:ultrastructure*; D015879:Myosin Subfragments / Q000494:pharmacology; D012617:Sea Urchins / Q000166:cytology*
chemical_list: D015879:Myosin Subfragments