Fig. 2

(a) Photograph of an infected pigeon showing a yellowish mass in the pharynx (black arrow). (b) Photomicrograph of a wet mount sample of T. gallinae, with the black arrow indicating the nucleus inside the T. gallinae trophozoite. (c) The black star highlights the anterior flagella and axostyle of T. gallinae (magnification ×400). (d & e) Photomicrographs showing different morphological forms of T. gallinae trophozoites stained with Giemsa stain (×1000), measuring 10.5–13.5 × 3–7.5 µm.