fig1
![EGFR mutation -- a commonly neglected mutation in squamous cell lung carcinoma](https://image.oaes.cc/24ba4f55-323a-4fa9-a7b5-8e3fcbcad3c3/1604.fig.1.png)
Figure 1. Squamous cell carcinoma positive for p40. (a) Lacking expression of thyroid transcription factor; (b) immunohistochemistry (magnifications, × 40)
Figure 1. Squamous cell carcinoma positive for p40. (a) Lacking expression of thyroid transcription factor; (b) immunohistochemistry (magnifications, × 40)
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