Figure 5
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Dictyocoela diporeiae n. sp., transmission electron micrograph of the microsporidian infecting Diporeia sp. in Lake Superior. Notice (A) the meront (small arrow) and mature spore (large arrow), (B) spore wall composed of a thick electron-lucent endospore (large arrow) overlaid with a thinner electron-dense exospore (small arrow), and (C) lamellar polaroplast composed of ordered concentric membranes surrounding the polar filament (large arrow). Scale bars: A = 1000 nm, B–C = 500 nm.
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