Schistosome surface spines are "crystals" of actin.
D000199:Actins / Q000032:analysis*; D000818:Animals; D046911:Macromolecular Substances; D008854:Microscopy, Electron; D012550:Schistosoma mansoni / Q000032:analysis / Q000648:ultrastructure*
D000199:Actins; D046911:Macromolecular Substances