Figure 8From: Niacinamide mitigated the acute lung injury induced by phorbol myristate acetate in isolated rat's lungsExpression of inducible nitric oxide synthase (iNOS) in endothelial cells (A) and alveolar macrophages (B, arrows). Antigen retrieval immunohistochemical stain of lung tissue sections was used (original magnification ×200).Back to article page