Figure 1
From: Magnetic resonance and computed tomography imaging of a carotid body tumor in a dog
Lymph node metastasis of the carotid body tumor in a lymph node (c), composed of small nests of large pleiomorphic polygonal or oval cells (arrow) with a large round nucleus with coarse chromatin and inconspicuous nucleoli, and a variable amount of granular, slightly basophilic cytoplasm (H&H stain; bar=80m). Also notice the mild cytoplasmic staining with anti-chromogranin A antibodies (inset right, b, immunohistochemical stain with anti-chromogranine A, bar=50m) and strong cytoplasmic staining with anti-vimentin antibodies (inset left, a, immunohistochemical stain; anti-vimentin, bar=50m)