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Updated: Oct 9, 2026

The Bovine Lung in Biomedical Research: Visually Guided Bronchoscopy, Intrabronchial Inoculation and In Vivo Sampling Techniques
Published on: July 3, 2014
A case of interstitial pneumonia associated with Pneumocystis carinii in a foal
M F Perron Lepage1, V Gerber, M M Suter
1Département Hippique, Ecole Nationale Vétérinaire de Lyon, Marcy l'Etoile, France.
Abstract:
Subacute interstitial pneumonia with diffuse alveolar damage, marked macrophage infiltration, and intracellular Pneumocystis carinii cysts is described in a 3-month-old Swiss warmblood foal. Clinically, the disease was characterized by sudden onset of respiratory distress with fatal outcome. Based on serum immunoglobulin G (IgG), IgA, and IgM values, no humoral immunosuppression was detected. Spleen, thymus, and bronchial lymph nodes did not reveal lymphoid depletion, as assessed by immunohistochemical staining of CD-3-positive cells. Immunopathogenesis of pulmonary infections with intracellular agents in foals is discussed.
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