Fig. 1From: Computational analysis reveals the coupling between bistability and the sign of a feedback loop in a TGF-β1 activation modelTGF-β1 bistable activation model. Black arrows represent the reactions from [5]. Red arrows represent the effects of calcium on the PLS-TSP1 interaction. Blue arrows represent the effects of KLF2 on PAI1 and TSP1 production. uPA is urokinase plasminogen activator, and PLG is plasminogenBack to article page