Figure 1

Different growth patterns of neurofibroma in the bovine celiac ganglion. A myxoid matrix with comparatively few cells next to infiltrated ganglion tissue is visible (A, B) showing two cell types: cells with small elongated nuclei with condensed chromatin (B, H; black arrows) and cells with large rather ovoid nuclei and coarse chromatin (B, H white arrows). Tumor cells infiltrating ganglion tissue can be observed (C, D) as well as compact neurofibroma with densely packed cells surrounded by a pseudo capsule formed by thickened perineurium (E, F) and lightly packed cells mimicking layers surrounded by a pseudo capsule (G, H). bar = 100 µm.