| ER, N (%) |  | PR, N (%) |  | Ki-67, N (%) |
---|---|---|---|---|---|
Immunostaining procedure | |||||
 Automated | 34 (82.9) |  | 34 (82.9) |  | 34 (82.9) |
 Manual | 7 (17.1) |  | 7 (17.1) |  | 7 (17.1) |
Type of antibody | |||||
 SP1(Ventana) | 26 (63.4) | 1E2(Ventana) | 19 (46.3) | 30–9(Ventana) | 12 (29.3) |
 EP1(Dako) | 10 (24.4) | EP2(BIO-SB) | 9 (22.0) | MIB-1(Maxim) | 14 (34.1) |
 6F11(Leica) | 2 (4.9) | PgR36(Dako) | 4 (9.7) | UMAB107(Origene) | 7 (17.1) |
 others | 3 (7.3) | others | 9 (22.0) | others | 8 (19.5) |
Antigen retrieval | |||||
 Automated | 33 (80.5) |  | 33 (80.5) |  | 33 (80.5) |
 Pressure cookers | 8 (19.5) |  | 8 (19.5) |  | 8 (19.5) |
Chromogen | |||||
 DAB | 41 (100) |  | 41 (100) |  | 41 (100) |
Evaluation | |||||
 Pathologist | 41 (100) |  | 41 (100) |  | 41 (100) |
Artificial intelligence | 0 | Â | 0 | Â | 0 |