Description of Porospora
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Porosporidan gregarines, oocysts absent, the sporozoites occurring in host leukocytes; gymnospores develop into naked sporozoites rather than into resistant oocysts in molluscan host; mature trophozoites relatively long, with a tendency to remain isolated; Porospora distinguished from Nematopsis by production of naked sporozoites rather than a resistant oocyst in the molluscan host; type species: P. gigantea (van Beneden, 1869) Schneider, 1875.