Fig. 3.

Trypanosoma cruzi amastigote nest in the heart of a naturally infected baboon. (A) Parasite nest (arrow) seen in a healthy myocardium section. Shown is hematoxylin and eosin (HE) staining. Magnification, ×200. (B) T. cruzi amastigotes fluorescing with a fluorescein-conjugated streptavidin 188-nt probe, which was PCR amplified with nDNA primers. The amastigote parasites hibernate in the nest in the absence of an inflammatory reaction in their surroundings. (Reprinted from reference 408 with permission of the publisher.)