Fig. 1From: Next-generation sequencing facilitates detection of the classic E13-A20 EML4-ALK fusion in an ALK-FISH/IHC inconclusive biopsy of a stage IV lung cancer patient: a case reportHE-staining and ALK-IHC of the NSCLC (scale bar indicates magnification). a HE-stained biopsy specimen, b Biopsy specimen: Overview of ALK-IHC staining, c Biopsy specimen: High power view of ALK-IHC staining. Insert shows a positive case with strong staining serving as internal control., d HE-stained surgical specimen, e Surgical specimen: Overview of ALK-IHC staining, f Surgical specimen: High power view of ALK-IHC staining. Insert shows a positive case with strong staining serving as internal controlBack to article page