DIAGRAM: GASTROINTESTINAL: GI: ARTERY: Effects of Hypertension on the Vessel Wall - 8 of 14, monocytes,macrophages; A=Granulocyte, B=Lymphocyte, C=Monocyte, D=Macrophage -- Adherence and penetration of blood-borne monocytes, lymphocytes, and granulocytes into the vessel wall follow, with accumulation of monocyte-derived macrophages.