Toxoplasma gondii cyst
Tintinnid
Radiolarian
Elphidium excavatum (foraminiferan)
Coscinodiscus (diatom)
Vahlkampfia cyst (heterolobosean)
Emiliana huxleyi (coccolithophore)
euglenid
Tetrahymena thermophila (ciliate)

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The Society is an international association of scientists devoted to research on single-celled eukaryotes, or protists. The ISOP promotes the presentation and discussion of new or important facts and problems in protistology, and works to provide resources for the promotion and advancement of this science.

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