Fig. 4. a in Morphological and molecular studies on two myxosporean infections of cyprinid fishes: Thelohanellus pyriformis from tench and Thelohanellus cf. fuhrmanni from nase

Fig. 4. a) Plasmodia (p) of Thelohanellus cf. fuhrmanni enclosed in a cyst inside the loose connective tissue (ct) in the snout of the common nase. Empty holes (h) show the place of plasmodia fell out during histological processing or damaged by syringe at sampling spores b) Enlarged picture of T. cf. fuhrmanni plasmodia. Plasmodia are surrounded by a thin, dens connective tissue of the host (arrows) c) A part of T. cf. fuhrmanni plasmodium. Inside the connective tissue capsule (arrow) and the thin ectoplasm a dark staining layer of young developmental stages (white arrow) is located, followed by a zone of sporoblast (sb) and young spores (Yds) toward to the center. The center of the plasmodium is filled with matured spores (ms).