These cells include epithelial cells, endothelial cells, fibroblasts, and mesenchymal cells. IL-1ra is produced by monocytes, macrophages, neutrophils, fibroblasts, epithelial cells, Sertoli cells, microglia. They bind to cells such as fibroblasts, macrophages, endothelial cells, and kidney epithelial cells. SVF includes preadipocytes, fibroblasts, adipose tissue macrophages, and endothelial cells. It can also be expressed by endothelial cells, smooth muscle cells, fibroblasts and epithelial cells. Fibronectin promotes particle phagocytosis by both macrophages and fibroblasts. Second, there is cellular differentiation of mesenchymal cells into osteoblasts or fibroblasts. These include lymphocytes, neutrophils, eosinophils, multinucleated giant cells, fibroblasts and collagen (fibrosis). Birthmarks are caused by overgrowth of blood vessels, melanocytes, smooth muscle, fat, fibroblasts, or keratinocytes. Soluble and transmembrane SCF is produced by fibroblasts and endothelial cells. Tumor cells use MMP-2 secreted by bone marrow fibroblasts (BMFs). It is lined by reticular cells, fibroblasts and fixed macrophages. Reticular fibers are synthesized by special fibroblasts called reticular cells. HA when tested in cultured human synovial fibroblasts. Ligament tissue mainly consists of fibroblasts and extracellular matrix.