Figure 1. Photographs and photomicrographs from a Black Tern (Chlidonias niger) found in Wisconsin, USA. (A)
Detailed Description
Figure 1. Photographs and photomicrographs from a Black Tern (Chlidonias niger) found in Wisconsin, USA. (A) Left wing showing large mass over carpus (arrow). (B) Cut section of carpal mass showing firm, irregular, orange tissue and cystic blood-filled space. (C) Photomicrograph showing cords and sheets of cells, with multifocal, variably sized spaces containing irregular, often dilated, vasculature and necrotic debris (asterisk). H&E stain. (D) High magnification showing pleiomorphic, polygonal epithelial cells with large, eosinophilic cytoplasmic inclusions (arrows). H&E stain.
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Figure 1. Photographs and photomicrographs from a Black Tern (Chlidonias niger) found in Wisconsin, USA. (A) Left wing showing large mass over carpus (arrow). (B) Cut section of carpal mass showing firm, irregular, orange tissue and cystic blood-filled space. (C) Photomicrograph showing cords and sheets of cells, with multifocal, variably sized spaces containing irregular, often dilated, vasculature and necrotic debris (asterisk). H&E stain. (D) High magnification showing pleiomorphic, polygonal epithelial cells with large, eosinophilic cytoplasmic inclusions (arrows). H&E stain.