Toloi, M. R. T. Urokinase-Plasminogen Activator from Bovine Plasma Obtained by Cellulose Sulfate Precipitation. Braz. J. Vet. Res. Anim. Sci. 1997, 34 (1), 5-8. https://doi.org/10.11606/issn.2318-3659.v34i1p5-8.