Figure 4From: TGF β1 and PDGF AA override Collagen type I inhibition of proliferation in human liver connective tissue cells Interaction between peptide growth factors and extracellular matrix. A. Effects of PDGF AA on the growth of LCTC (black bars) and SF (gray bars) plated on collagen or plastic (n = 4). B. Effects of TGF-β on the growth of LCTC (black bars) and SF (gray bars) plated on collagen or plastic (n = 3). (*) denotes significant difference between SF and LCTC; p ≤ 0.05.Back to article page