Affiliation:
1. Institute of Veterinary Pathology, State University Utrecht, Utrecht, the Netherlands
Abstract
Electron microscopic studies of bovine kidneys with amyloidosis showed macrophage-like cells in the interstitial amyloid that were either disseminated or in small groups. They had rather uniform protracted vacuoles filled with parallel fibrils. Similar vacuoles were also found in some reticular interstitial cells. In some samples electron-dense vacuoles and vacuoles containing fibrils were seen. Protracted lysosomal enzyme activity was seen in macrophage-like cells and reticular interstitial cells; these areas of activity showed green birefringence with Congo red. The vacuoles were thought to be lysosomes, and the parallel amyloid fibrils could be a consequence of intracellular formation or of phagocytosis.
Cited by
8 articles.
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