Cimino, Cecilia, Sandra Vairo Cavalli, Francisco Spina, Claudia Natalucci, and Nora Priolo. 2006. “Callus Culture for Biomass Production of Milk Thistle As a Potential Source of Milk Clotting Peptidases”. Electronic Journal of Biotechnology 9 (3). Valparaíso, Chile:0-0. https://preprints.pucv.cl/index.php/ejbiotechnology/article/view/v9n3-14.