|
| | protozoa | Entamoeba histolytica
| 
| 
| individual trophozoites from feces
| 
| 
| 
| individual trophozoites from feces
| 
| 
| 
| individual cysts from feces
|
Entamoeba coli 
| 
| 
| individual trophozoites from feces | 
| 
| 
| individual trophozoites from feces | 
| 
| 
| cysts from feces |
Entamoeba gingivalis
Cysts of Giarida intestinalis (syn. Giardia lamblia) 
| 
| Giardia intestinalis
(Mastigophora)
live fecal cyst from dog in Kansas | Giardia intestinalis
(Mastigophora)
stained cysts from feces of Kansas resident |
Giardia intestinalis (syn. Giardia lamblia)trophozoites 
| 
| 
| view through nuclei
(Kansas canine) | ventral adhesive disc
(Kansas canine) | polychrome IV stain
(human) |
Plasmodium falciparum (Apicomplexa)
(Malignant tertian malaria) 
| 
| 
| | ring stages | microgametocyte | 
| 
| 
| | macrogametocytes |
Plasmodium malariae (Apicomplexa)
(Quartan malaria)
(technically, this species should probably be regarded as a synonym of the primate malaria, Plasmodium brasilianum)
| 
| 
| 
| | ring stages | 
| 
| 
| 
| | bands | "trophozoite" | 
| 
| 
| 
| | developing segmenters (meronts) | 
| 
| 
| 
| | mature segmenters (note rosette arrangement of merozoite nuclei) |
Plasmodium vivax (Apicomplexa)
(Benign tertian malaria) 
| 
| 
| 
| | ring stages | 
| 
| 
| 
| | immature, developing segmenters (meronts) | 
| 
| 
| 
| | mature segmenters (meronts) | Schuffner's dots | gametocyte |
Toxoplasma gondii
Tissue cysts of 3 Sarcocystidae from the central nervous system 
| 
| 
| Frenkelia microti
(vole)
some up to 1 mm diameter | Neospora caninum
(calf)
this cyst 29 x 28 micrometers | Toxoplasma gondii
(mouse)
this cyst 25 x 25 micrometers |
Toxoplasma gondii
Sporulated oocysts of 3 intestinal coccidia from felids
(all same magnification) 
| 
| 
| Isospora felis
(35-50 x 25-38 micrometers)
| Isospora rivolta
(25-30 x 18-25 micrometers)
| Toxoplasma gondii
(10-12 x 12-14 micrometers) |
Trichomonas vaginalis
Some miscellaneous flagellates 
| 
| Opalina sp. (Opalinata)
trophozoite from Pseudacris streckeri | Trichonympha campanula
trophozoites from termite gut | 
| 
| Trichomonas vaginalis(Mastigophora)
trophozoites from culture | Trichomonas vaginalis(Mastigophora)
longitudinal binary fission |
Trypanosoma cruzi Some miscellaneous Kinetoplastids 
| 
| 
| Leishmania donovani
(host: hamster)
liver smear | Trypanosoma cruzi
(host: rat)
trypomastigote in blood | Trypanosoma cruzi
(host: rat)
amastigotes in heart muscle |
Balantidium coli cyst Some miscellaneous ciliates 
| 
| 
| Balantidium coli cyst
(intestine of swine)
40-60 micrometers in diameter | Ichthyophthirius multifiliis trophozoite
(in skin of freshwater fish)
up to 1 mm long | Nyctotherus sp. trophozoites
(Geochelone dendriculata) |
Balantidium coli trophozoites
(Ciliophora)
|
|
| |
|
