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Photomicrograph showing a biopsy of lung adenocarcinoma used as a positive control for inducible nitric oxide synthase (iNOS) immunostain. Photomicrograph.

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Presentation on theme: "Photomicrograph showing a biopsy of lung adenocarcinoma used as a positive control for inducible nitric oxide synthase (iNOS) immunostain. Photomicrograph."— Presentation transcript:

1 Photomicrograph showing a biopsy of lung adenocarcinoma used as a positive control for inducible nitric oxide synthase (iNOS) immunostain. Photomicrograph showing a biopsy of lung adenocarcinoma used as a positive control for inducible nitric oxide synthase (iNOS) immunostain. There is strong immunopositivity in the tumour cell nuclei and cytoplasm ((A) immunohistochemistry (IHC; iNOS) ×200). Photomicrograph of a biopsy showing baseline collagenous colitis; there is strong and diffuse immunopositivity for iNOS immunostain in surface and crypt mucosa. Few lymphocytes also showing positivity for iNOS ((B) IHC (iNOS) ×100). Eight weeks after VSL#3 treatment, there is a marked reduction in the area distribution and stain intensity of iNOS immunostain ((C) IHC (iNOS) ×40; Blue arrow showing nuclear positivity). Eighteen weeks post VSL#3 treatment, there is still a very minimum expression of iNOS in the colonic biopsy ((D) IHC (iNOS) ×40; Brown arrow showing occasional nuclear positivity). Sarika Rohatgi et al. BMJ Open Gastroenterol 2015;2:e000018 Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to


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