fibroblast. structure and function

acid animal biology cell cells collagen connective cross cytoplasm disease elastic elastin enzyme extracellular factor fiber fibers fibroblast fibroblastes fibroblastoma fibroblasts fibrocyte function glycoproteins glycosaminoglycans ground growth healing human hyaluronic laboratory matrix medical medicine mesodermal metabolism microfilaments mitochondria nucleus protein research reticular science scientific section skin stroma structure substance tissue wound