Neutrophils can secrete products that stimulate monocytes and macrophages. Activated macrophages and monocytes secrete HMGB1 as a cytokine mediator of Inflammation. CCL2 is primarily secreted by monocytes, macrophages and dendritic cells. These antibodies interact with Fc receptors on macrophages and neutrophils resulting in phagocytosis. T lymphocytes, macrophages, and neutrophils. Macrophages and endothelial cells release nitric oxide. It is produced by monocytes, macrophages, osteoblasts, keratinocytes. Fibronectin promotes particle phagocytosis by both macrophages and fibroblasts. SVF includes preadipocytes, fibroblasts, adipose tissue macrophages, and endothelial cells. These pro-inflammatory molecules result in the recruitment of macrophages and neutrophils. It is also present in cytoplasmic granules of the macrophages and the polymorphonuclear neutrophils (PMNs). It is lined by reticular cells, fibroblasts and fixed macrophages. Mycobacteria are intracellular bacteria which survive in host macrophages. Medullary sinuses contain histiocytes (immobile macrophages) and reticular cells. Iron export occurs in a variety of cell types, including neurons, erythrocytes, macrophages and enterocytes.