title: The rod-shaped sperm of Gordioidea (Aschelminthes, Nematomorpha).
mesh_terms: D000177:Acrosome / Q000648:ultrastructure; D000818:Animals; D002467:Cell Nucleus / Q000648:ultrastructure; D006376:Helminths / Q000033:anatomy & histology*; D008297:Male; D013094:Spermatozoa / Q000648:ultrastructure*