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  Indian J Med Microbiol
 

Figure 2: (a and b) Endobronchial biopsy with positivity for CK7 (c) and TTF-1 (d) diagnosed as adenocarcinoma, (e) positivity for E746-A750 epidermal growth factor receptor protein using immunohistochemistry, (f) negative staining with L858R immunohistochemistry, (g and h) cell block with clusters of tumor cells, (i) cell block with positive ICC for E746-A750, (j) cell block with negative staining for L858R (a and g: haematoxylin and eosin x100, b and h: haematoxylin and eosin x200, c–f and i, j: DAB, ×100)

Figure 2: (a and b) Endobronchial biopsy with positivity for CK7 (c) and TTF-1 (d) diagnosed as adenocarcinoma, (e) positivity for E746-A750 epidermal growth factor receptor protein using immunohistochemistry, (f) negative staining with L858R immunohistochemistry, (g and h) cell block with clusters of tumor cells, (i) cell block with positive ICC for E746-A750, (j) cell block with negative staining for L858R (a and g: haematoxylin and eosin x100, b and h: haematoxylin and eosin x200, c–f and i, j: DAB, ×100)