Table 1.
Immunohistochemical Results of Olig2-C in Tumor Cases
| Histology | Total | − | + | ++ | +++ |
|---|---|---|---|---|---|
| Oligodendroglial tumors* | 40 | 0 | 8 | 13 | 19 |
| Oligodendroglioma | 16 | 0 | 3 | 6 | 7 |
| Oligoastrocytoma | 3 | 0 | 0 | 1 | 2 |
| Anaplastic oligodendroglioma | 16 | 0 | 3 | 5 | 8 |
| Anaplastic oligoastrocytoma | 5 | 0 | 2 | 1 | 2 |
| Astrocytic tumors† | 35 | 6 | 17 | 6 | 6 |
| Pilocytic astrocytoma | 4 | 0 | 2 | 1 | 1 |
| Fibrillary astrocytoma | 10 | 0 | 7 | 2 | 1 |
| Anaplastic astrocytoma | 8 | 1 | 3 | 1 | 3 |
| Glioblastoma | 13 | 5 | 5 | 2 | 1 |
| Central neurocytoma | 6 | 6 | 0 | 0 | 0 |
| Schwannoma | 11 | 11 | 0 | 0 | 0 |
Olg2-C staining results are evaluated by intensity and numbers, and tumor samples are classified into a four-tiered scale (−, +, ++, +++); (see Materials and Methods). A significant difference (P = 0.001) is detected between oligodendroglial (*) and astrocytic (†) groups by Mann-Whitney’s U test.