Table 1 Numbers of samples classified by ease of identification (staining intensity) and percentage of positive staining cells, by tissue type and IHC staining method
Tissue | Staining Method | Number of samples classified by ease of identification at 2.5× | Number of samples classified by percentage of positive cells | ||||
|---|---|---|---|---|---|---|---|
|  |  | Unable | Identifiable | Easy | < 20% | 20–80% | > 80% |
Heart | Monoclonal | 10 | 9 | 1 | 20 | 0 | 0 |
| Â | Polyclonal | 17 | 24 | 1 | 33 | 9 | 0 |
Kidney | Monoclonal | 1 | 16 | 8 | 23 | 2 | 0 |
| Â | Polyclonal | 4 | 28 | 7 | 32 | 7 | 0 |
Brain | Monoclonal | 2 | 3 | 0 | 5 | 0 | 0 |
| Â | Polyclonal | 5 | 1 | 0 | 6 | 0 | 0 |
Spleen | Monoclonal | 1 | 3 | 6 | 3 | 7 | 0 |
| Â | Polyclonal | 0 | 6 | 8 | 2 | 12 | 0 |
Liver | Monoclonal | 1 | 7 | 2 | 6 | 4 | 0 |
| Â | Polyclonal | 2 | 6 | 7 | 3 | 12 | 0 |
Lung | Monoclonal | 0 | 3 | 7 | 7 | 3 | 0 |
| Â | Polyclonal | 0 | 7 | 6 | 8 | 5 | 0 |
Small Intestine | Monoclonal | 0 | 5 | 10 | 8 | 4 | 3 |
| Â | Polyclonal | 0 | 1 | 17 | 5 | 8 | 5 |