Effect of type of fixative on Ki-67 immunohistochemistry
| Type of fixative | No. of samples | Ki-67 index (mean±SD: %) | p Value (Welch's t test) |
|---|---|---|---|
| 10% NBF | 655 | 30.5±22.9 | 0.0276 |
| 15% F | 655 | 27.8±20.9 |
10% NBF, 10% neutral buffered formalin; 15% F, 15% unbuffered formalin.