1. Anaplastic oligoastrocytoma, WHO III, 4x2. Anaplastic oligoastrocytoma, WHO III, 10x3. Anaplastic oligoastrocytoma, WHO III, 10x4. Anaplastic oligoastrocytoma, WHO III, 10x5. Anaplastic oligoastrocytoma, WHO III, 20x6. Anaplastic oligoastrocytoma, WHO III, 20x7. Anaplastic oligoastrocytoma, WHO III, 20x8. GFAP, 10x9. Ki-67, 10x