Pathology All of the following are false regarding vascular leakage in acute inflammation, except: A Chemical mediators such as histamine play a role in delayed vascular leakage. B Hallmark of acute inflammation is an increased permeability in the post-capillary venules. C Transcytosis is not a contributing factor to vascular leakage. D In most cases, vascular leakage stas several hours after injury. 💡 Explanation All of the following are false regarding vascular leakage in acute inflammation, except: ✓ Correct Answer: B. Hallmark of acute inflammation is an increased permeability in the post-capillary venules.