polaroplast

polaroplast: po·laro·plast (po-larґo-plast) [polar + plast] an organelle in microsporidans that imbibes water, swells, and exerts pressure to rupture the polar cap and evert the polar tube through which the sporoplasm escapes to infect the host.

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Microsporidia — Sporoblast of Fibrillanosema crangonycis Scientific classification … Wikipedia
Microsporea — Mi·cro·spor·ea (mi″kro sporґe ə) a class of parasitic protozoa (phylum Microspora), the spores of which have a complex extrusion apparatus of Golgi origin, often including a polaroplast and posterior vacuole and a typically filamentous … Medical dictionary
Minisporida — Mini·spor·i·da (min″e sporґĭ də) [mini + spore] an order of parasitic protozoa (class Microsporea, phylum Microspora) having a general tendency toward minimum development of accessory spore organelles accompanied by maximum… … Medical dictionary
Rudimicrosporea — Ru·di·mi·cro·spo·rea (roo″dĭ mi″kro sporґe ə) [rudiment + micro + spore] a class of protozoa (phylum Microspora) found as hyperparasites of gregarines in annelids, the spores of which have a simple extrusion apparatus… … Medical dictionary

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