Aspergillus Section Nigri-Associated Calcium Oxalate Crystals in an Eurasian Eagle Owl (Bubo bubo)

<div>Eurasian eagle owl, air sac. Pigmented conidial heads mixed with fungal hyphae. (a) Visualization of conidiophores of Aspergillus section Nigri on routine H&amp;E section. Original objective 40x. (b) Fungal mats characterized by dark black outlines with Grocott’s methenamine silver (GMS) stain. Original objective 40x.</div>

Case Reports in Veterinary Medicine

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Figure 4

Figure 4: Aspergillus Section Nigri-Associated Calcium Oxalate Crystals in an Eurasian Eagle Owl (Bubo bubo)