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Stieda body

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The Stieda body is an organelle located at the polar region of the sporocyst of some coccidia visible with electron microscopy. It appears as a knob like structure and is a plug occluding a hole in the sporocyst. The breakdown of this body allows excystation of the sporozoites.

References

McAllister, Chris T.; Seville, R. Scott; Connior, Matthew B. (1 September 2015). "A new species of Isospora (Apicomplexa: Eimeriidae) from eastern coachwhip, Coluber flagellum flagellum (Reptilia: Ophidia) from Oklahoma". Acta Parasitol. 60 (3): 466–470. doi:10.1515/ap-2015-0065. PMC 4539277. PMID 26204185.

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Eukaryota: SAR: Alveolata

(major groups

Mesomycetozoea)

Acavomonadea	Acavomonadida (Acavomonas)

Intramacronucleata	Armophorea (Metopus) Cariacotrichea (Cariacothrix caudata) Colpodea (Colpoda) Litostomatea (Balantidium, Dileptus) Muranotrichea (Muranothrix) Nassophorea (Nassula) Oligohymenophorea (Ichthyophthirius, Paramecium, Tetrahymena, Vorticella) Parablepharismea (Parablepharisma) Phyllopharyngea (Chilodonella, Tokophrya) Plagiopylea (Plagiopyla) Prostomatea (Coleps, Holophrya) Protocruziea (Protocruzia) Spirotrichea (Euplotes, Stylonychia)
Postciliodesmatophora	Heterotrichea (Stentor, Climacostomum, Blepharisma) Karyorelictea (Loxodes, Tracheloraphis)
Mesodiniea (Mesodinium, Myrionecta)

Colponemadea	Colponemadida (Colponema)

Haemospororida	Garniidae (Garnia) Haemoproteidae (Haemoproteus) Leucocytozoidae (Leucocytozoon) Plasmodiidae (Plasmodium)
Piroplasmida	Babesiidae (Babesia) Theileriidae (Theileria)
Cardiosporidium Nephromyces

Agamococcidiorida

Gemmocystidae (Gemmocystis)
Rhytidocystidae (Rhytidocystis)

Adeleidae
Dactylosomatidae (Babesiosoma, Dactylosoma)
Haemogregarinidae (Haemogregarina)
Hepatozoidae (Hepatozoon)
Karyolysidae (Karyolysus)
Klossiellidae (Klossiella)
Legerellidae (Legerella)

Aggregatidae (Aggregata, Grasseella, Merocystis, Ovivora, Pseudoklossia, Selysina) Atoxoplasmatidae Barrouxiidae Calyptosporiidae Caryotrophidae Cryptosporidiidae (Cryptosporidium) Eimeriidae (Cyclospora, Eimeria, Isospora) Elleipsisomatidae Lankesterellidae Selenococcidiidae
Sarcocystidae	Sarcocystinae (Frenkelia, Sarcocystis) Toxoplasmatinae (Besnoitia, Hammondia, Hyaloklossia, Nephroisospora, Neospora, Toxoplasma)

Ixorheidae (Ixorheis)

Protococcidiorida

Angeiocystidae (Angeiocystis)
Eleutheroschizonidae (Coelotropha, Defretinella, Eleutheroschizon)
Grelliidae (Coelotropha, Grellia)
Mackinnoniidae (Mackinnonia)
Myriosporidae (Myriosporides, Myriospora)

Archigregarinorida

Exoschizonidae (Exoschizon)
Selenidioididae (Merogregarina, Meroselenidium, Selenidioides, Veloxidium)

Eugregarinorida

Aseptatorina	Aikinetocystidae Allantocystidae Diplocystidae Enterocystidae Ganymedidae Lecudinidae Monocystidae (Monocystinae, Oligochaetocystinae, Rhynchocystinae, Stomatophorinae, Zygocystinae) Schaudinnellidae Selenidiidae Thiriotiidae Urosporidae
Blastogregarinorina	Siedleckiidae (Siedleckia)
Septatorina	Fusionicae (Fusionidae) Gregarinicae (Cephaloidophoridae, Cephalolobidae, Didymophoridae, Gregarinidae, Hirmocystidae, Metameridae, Uradiophoridae) Porosporicae (Porosporidae) Stenophoricae (Acutidae, Amphiplatysporidae, Brustiophoridae, Cnemidosporidae, Dactylophoridae, Leidyanidae, Monoductidae, Monoicidae, Sphaerocystidae, Stenophoridae, Trichorhynchidae) Stylocephaloidea (Actinocephalidae, Stylocephalidae) Blabericolidae

Neogregarinorida

Schizogregarinina (Caulleryellidae, Ophryocystidae)
Gigaductidae (Gigaductus)
Lipotrophidae (Apicystis, Farinocystis, Lipotropha, Lipocystis, Mattesia, Menzbieria)
Schizocystidae (Lymphotropha, Machadoella, Schizocystis)
Syncystidae (Syncystis)

Chromerida	Chromeraceae (Chromera velia) Vitrellaceae (Vitrella brassicaformis)
Colpodellida	Colpodellidae (Colpodella)
Voromonadida	Alphamonadidae (Alphamonas) Voromonadidae (Voromonas)

Dinokaryota	With a theca: Dinophysiales (Dinophysis, Histioneis, Ornithocercus, Oxyphysis) Gonyaulacales (Ceratium, Gonyaulax) Peridiniales (Pfiesteria, Peridinium) Prorocentrales (Prorocentrum) Without theca: Gymnodiniales (Amphidinium, Gymnodinium, Karenia, Karlodinium) Suessiales (Polarella, Symbiodinium)
Noctilucea	Noctilucales (Noctiluca)
Syndinea	Syndiniales: Amoebophryaceae (Amoebophyra) Duboscquellaceae (Duboscquella) Syndiniaceae (Hematodinium, Syndinium)
Other	Acrocoelidae (Acrocoelus) Ichthyodinium Oxyrrhinaceae (Oxyrrhis) Pronoctilucidae (Pronoctiluca) Psammosidae (Psammosa)

Perkinsea	Perkinsidae (Perkinsus) Phagodinida (Phagodinium) Rastromonadida (Parvilucifera, Rastrimonas)

Ellobiopsidae (Elliobiocystis, Ellobiopsis, Parallobiopsis, Thalassomyces, Rhizellobiopsis)

Algovorida	Algovoridae (Algovora)
Chilovorida	Chilovoridae (Chilovora)

Squirmidae (Filipodium, Platyproteum)

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Protozoan infection: SAR and Archaeplastida

Conoidasida/
Coccidia

Plasmodium falciparum/vivax/ovale/malariae/knowlesi
- Malaria
- Blackwater fever

Babesia
- Babesiosis

Balantidium coli
- Balantidiasis

Algaemia: Prototheca wickerhamii
- Protothecosis

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