Protozoans

E. histolytica/dispar cyst

E. histolytica/dispar troph

E. histolytica ingesting rbcs

E. coli cyst

E. coli troph

I. buetschlii cyst

I. buetschlii troph

E. nana cyst

E. nana troph

Acanthamoeba spp cyst and troph

N. fowleri cyst and troph

B. hominis cyst vacuolar form

G. duodenalis cyst

G. duodenalis troph

T. vaginalis troph

D. fragilis uninucleate and binucleate trophs

C. mesnili cyst and troph

T. cruzi and rangeli trypomastigote

T. brucei spp trypomastigote

Amastigote

Leishmania spp. promastigote

General Leishmania spp. amastigote

L. tropica amastigote

L. mexicana amastigote

C. parvum oocyst

C. belli oocyst

Sporulated Sarcocystis spp. oocyst

Sarcocysts with bradyzoites

Cyclospora spp. oocyst

Microsporidia spores

Rings-form trophs of P. falciparum

P. falciparum gametocyte

Schizont of P. falciparum

Birds-eye and ring-form trophs of P. malariae

Band-form troph of P. malariae

Basket-form troph of P. malariae

P. malariae gametocyte

P. malariae schizont

Ring-form troph of P. ovale

P. ovale gametocyte

P. ovale schizont

Ring-form troph of P. vivax

P. vivax troph with Schüffner's dots

P. vivax gametocyte

Ookinete of P. vivax

P. vivax schizonts

Tetrad-form of Babesia

T. gondii tachyzoites

T. gondii cyst

T. gondii oocyst