title: Ultrastructural observations on four species of sporozoa.
mesh_terms: D000818:Animals; D001001:Anura; D016782:Apicomplexa / Q000166:cytology*; D001717:Birds; D003465:Culex; D007549:Isospora / Q000166:cytology*; D008116:Lizards; D008854:Microscopy, Electron; D010961:Plasmodium / Q000166:cytology*