Fig. 3 in Hyaloklossia Labb´e, 1896 (Alveolata: Apicomplexa) in frogs: Description of a new species and proposing a new subfamily to accommodate these enigmatic parasites

Fig. 3. Light microscopy of hematoxylin and eosin-stained sections of renal tissues of Pelophylax porosus porosus. (A) Mature sporocysts in the renal interstitium. Arrows indicate the transverse section of sporocysts showing four sporozoites with nuclei and a granular sporocyst residuum. (B and C) Immature oocysts. Note the very thin oocyst wall (arrows), sporonts with granular cytoplasm, and nuclei distributed at the cell margin (arrowheads). (D) Immature oocysts with two sporoblasts each and containing two polar nuclei (arrowheads). (E) Mature oocysts in renal epithelial cell showing two sporocysts with elongated sporozoites with circular nuclei (arrowhead) and a granular sporocyst residuum. Arrows indicate the sporocyst wall. Bars = 50 μm (A) and 10 μm (B–E).