Figure 84-5. Sexual states of T gondii.

Figure 84-5Sexual states of T gondii

A.

Schizonts (double arrowheads), female gamonts (arrows), and male gamonts (arrowheads) in section of superficial epithelial cells of the small intestine of a cats. Hematoxylin and eosin stain. Bar = 15 μm.

B.

Three male gametes each with 2 flagella (arrowheads) compared with a merozoite (arrow). Impression of intestinal epithelium of a cat. Giemsa stain. Bar = 10 μm.

C.

Unsporulated oocytes (arrowheads) in feces of a cat. Note 2 oocysts of another feline coccidium, Isospora felis (arrowheads). Isospora felis sporulates faster than T gondii.The oocysts on top of the picture already contains 2 sporocysts while all T gondii oocysts are unsporulated. Unstained. Bar - 65 μm.

D.

Transmission electron micrograph of a sporulated oocyst. Note thin oocyst wall (arrow), 2 sporocysts (arrowheads) and 4 sporozoites (double arrowheads) in sporocysts. Bar - 2.25 μm. (Courtesy of Dr. D.S. Lindsay, Auburn University, Auburn, AL.)

From: Chapter 84, Toxoplasma Gondii

Cover of Medical Microbiology
Medical Microbiology. 4th edition.
Baron S, editor.
Copyright © 1996, The University of Texas Medical Branch at Galveston.

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