Fig. 3
From: Neurocytoma arising from a mature ovary teratoma: a case report
a: Immunohistochemical staining for NeuN shows that the nuclei of the tumor cells are NeuN-positive; b: immunohistochemical staining for synaptophysin shows that the tumor cells and the neuropil-like islands are synaptophysin-positive; c: immunohistochemical staining for GFAP shows GFAP-negative tumor cells and trapped GFAP-positive reactive astrocytes; d: immunohistochemical staining for Ki-67 shows tumor cells with low proliferation index (about 2Â %). a-d are at moderate magnification