Pathology Which one of the following factors is labelled as cytokine in the pathogenesis of systemic inflammatory response syndrome (SIRS) ? A Nitric oxide B Complements C Leukotrienes D Tumor Necrosis factor 💡 Explanation Which one of the following factors is labelled as cytokine in the pathogenesis of systemic inflammatory response syndrome (SIRS) ? ✓ Correct Answer: D. Tumor Necrosis factor