Fig. 1. Ultrastructure of the Golgi in microsporidia P. grylli. Cells from cricket fat bodies were infected with P. grylli, fixed and prepared for routine EM. (A-E) Clusters (300-700 nm in diameter, thin arrows) of elongated round profiles (TNs) in meronts, which are often connected with the ER (B,C, thick arrows) and sometimes to the plasma membrane (D,E, thick arrows). (F-I) In sporonts, the number of ER cisternae (F, thick arrows) and the size of the TNs (G-I, TN) are increased. TNs are mostly composed of round profiles (G,H, thick arrows) and often connected with the ER (H,I, thin arrows) and with the plasma membrane (I, thick arrow). Bar, 1400 nm (A); 130 nm (B); 160 nm (C); 270 nm (D,G,I); 1000 nm (F); 200 nm (E,H).