Sipley, J. D., Alexander, D. S., Testa, J. E., & Quigley, J. P. (1997). Introduction of an RRHR motif into chicken urokinase-type plasminogen activator (ch-uPA) confers sensitivity to plasminogen activator inhibitor (PAI)-1 and PAI-2 and allows ch-uPA-mediated extracellular matrix degradation to be controlled by PAI-1. The National Academy of Sciences of the USA.

Sipley, John D., Daniela S. Alexander, Jacqueline E. Testa, och James P. Quigley. Introduction of an RRHR Motif Into Chicken Urokinase-type Plasminogen Activator (ch-uPA) Confers Sensitivity to Plasminogen Activator Inhibitor (PAI)-1 and PAI-2 and Allows Ch-uPA-mediated Extracellular Matrix Degradation to Be Controlled By PAI-1. The National Academy of Sciences of the USA, 1997.

Sipley, John D., Daniela S. Alexander, Jacqueline E. Testa, och James P. Quigley. Introduction of an RRHR Motif Into Chicken Urokinase-type Plasminogen Activator (ch-uPA) Confers Sensitivity to Plasminogen Activator Inhibitor (PAI)-1 and PAI-2 and Allows Ch-uPA-mediated Extracellular Matrix Degradation to Be Controlled By PAI-1. The National Academy of Sciences of the USA, 1997.