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. 2016 Mar;143(3):308–314. doi: 10.4103/0971-5916.182621

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Copyright: © Indian Journal of Medical Research

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Fig. 1 — (A). Photomicrograph of biopsy from the mass lesion in lung shows an invasive adenocarcinoma H&E x 20. (B) EGFR del E746-A750 IHC shows weak cytoplasmic staining without membrane accentuation scored as 1+ original magnification x10. (C) EGFR L858R IHC shows moderate intensity of cytoplasmic staining with rare membrane reactivity scored as 2+ original magnification x20. (D) EGFR del E746-A750 IHC shows strong cytoplasmic positivity with diffuse membrane staining scored as 3+ original magnification x10.