title: A synchronized multicellular movement initiated by light and mediated by microfilaments.
mesh_terms: D000199:Actins / Q000032:analysis; D000818:Animals; D000001:Calcimycin / Q000494:pharmacology; D002462:Cell Membrane / Q000648:ultrastructure; D002465:Cell Movement; D003593:Cytoplasm / Q000502:physiology*; D003599:Cytoskeleton / Q000187:drug effects / Q000502:physiology*; D004848:Epithelium / Q000648:ultrastructure; D008027:Light; D008297:Male; D013737:Testis / Q000032:analysis / Q000648:ultrastructure; D014561:Urochordata / Q000032:analysis / Q000648:ultrastructure*
chemical_list: D000199:Actins; D000001:Calcimycin