Dr. Murai Éva szerk.: Parasitologia Hungarica 23. (Budapest, 1990)

Cytostome - cytopharynx The cytostome lies in the first third of the cell body at the termination of the preoral ridge. A prominent lip is seen around the opening (Fig. 1). The structure of the cytostome and cytopharynx does not differ from the type described in bloodstream Trypanoplasma?, or in Cryptobia (Figs 2, 9 and 11 insert). The microtubular band is associated with the cytostome composed of five tubuli at the level of the basal bodies. The preoral ridge consists of five microtubules like in other Trypanoplasma?, or Cryptobia. Legend to the figures Figs 1-4-. Scanning electron micrographs of Trypanoplasma borelli Fig. 1: Pyriform cell body. The free flagellum (Af) and recurrent flagellum (Rf) arise from the flagellar pocket. Undulating membrane (Urn) characteristic, (x 15 000) Fig. 2: Slender form. The preoral ridge (Pr) extends posteriorly from the tip of the cell to the cytostome (Cs). (x 15 000) Fig. 3: Slender forms correspond to the metacyclic forms.(x 7 000) Fig. 4: Dividing cells, connected at the posterior end. (x 15 000) Figs 5-18: Transmission electron micrographs of Trypanoplasma borelli Fig. 5: Dividing cell, after nuclear division (N) with single kinetoplast (Kp). Cross-section of subpellicular microtubules (SMt). Endoplasmic reticulum (Er) under the pellicle. Vacuoles, (x 17 000, insert x 17 000) Fig. 6: Longitudinal section with recurrent flagellum (Rf) attached to the cell surface. The fuzzy coat (Fz) is well visible. Polysaccharide (P) and digestive vacuoles (Dv) in the cytoplasm, (x 28 000) Fig. 7: Longitudinal section. Nucleus (N) with dispersed chromatin. Kinetoplast (Kp) - mitochondrion (Mi) complex on the dorsal side of the specimen. Golgi apparatus (Go) between nucleus, kinetoplast and flagellar pocket (Fp). Two flagella originate from the marginal wall of the flagellar pocket, (x 12 000) Fig. 8: Longitudinal section. Golgi apparatus (Go) composed of parallel tubes. Microtubuli (Mt) directed from basal part of flagella to the kinetoplast (Kp). Electron-dense plaques and tubuli in the wall of the flagellar pocket, (x 50 000) Fig. 9: Longitudinal section. Nucleus (N) with irregular shape. Kinetoplast-mitochondrion complex lying on opposite site of cytopharynx (Cph). Preoral ridge with microtubules (Pr). (x 10 000) Fig. 10: Stumpy form with divided nucleus. Basal body (Bb) at the mitochondrion (Mi). The structure of the flagellum is evident, (x 20 000)