title: Freeze-preservation of Leucocytozoon simondi sporozoites in liquid nitrogen.
mesh_terms: D000818:Animals; D016782:Apicomplexa / Q000254:growth & development; D004372:Ducks; D009584:Nitrogen; D011309:Preservation, Biological; D011528:Protozoan Infections / Q000209:etiology
chemical_list: D009584:Nitrogen