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Comparison of immunostaining between the original and recurrent tumour biopsy
| Staining | Original | Recurrrent |
|---|---|---|
| CK7 | + | ND |
| CK14 | ND | − |
| CK18 | ++ | + |
| HMWK | − | ++ |
| P63 | − | ++ |
| EMA | ++ | ND |
| Vimentin | ++ | − |
| CD10 | + | − |
| SMA | − | − |
| Calponin | − | − |
−, Negative; +, focally or weakly positive; ++, strongly or diffusely positive; ND not done
