Fig. 1 in Characterization of aortic and brachiocephalic filariasis by Filarioidea sp (Nematoda:Spirurida:Filarioidea) in Mexican ramphastids

Fig. 1. Lesions associated with filariasis in ramphastid birds submitted to the Research and Diagnostic Laboratory for Avian Diseases, College of Veterinary Medicine- UNAM. (A) Cardiopulmonary system with severe thickening of the aortic trunk (arrow), and moderate hypertrophy of the left ventricle. (B) Heart with severe thickening of the aortic and brachiocephalic trunk (arrows), and left cardiac ventricle hypertrophy. (C) Photomicrography of the heart, in the lumen of the left auricle, there are numerous microfilariae, erythrocytes, and thrombocytes. Hematoxylin-eosin (H& E) stain, bar: 50 μm. (D) Photomicrography of a longitudinal section of the aorta artery. The wall is severely enlarged due to abundant presence of connective tissue, chondroid metaplasia, and adult filariae in a cross section (arrows). In the filarial section, cuticle, coelomic musculature, and a gravid uterus are observed. H&E stain, bar: 500 μm. (E) Photomicrography of the aortic wall (arrow); cross section of an adult, female filaria, surrounded by extensive areas of chondroid metaplasia and connective tissue. H&E stain, bar: 200 μm.