FIG 2.
Microscopic detection of T. whipplei-infected duodenal mucosa. (Top) Hematoxylin-and-eosin-stained duodenal biopsy specimens with foamy macrophages in the lamina propria (arrows). The specimens were photographed with a 20× (left) and 40× (right) lens objective. (Bottom) Periodic acid-Schiff-diastase (PAS-D)-stained duodenal biopsy specimens with PAS-D-positive granules in the foamy macrophages (arrows). The same duodenal biopsy specimens as those used in the top panels were used here. The specimens were photographed with a 20× (left) and 40× (right) lens objective.