Separation and partitioning of Green Fluorescent Protein from Escherichia coli homogenate in poly(ethylene glycol)/sodium-poly(acrylate) aqueous two-phase systems - Johansson, Hans-Olof; Ishii, Marina; Minaguti, Mariane Freitas; Feitosa, Eloi; Vessoni Penna, Thereza Christina; Pessoa Junior, Adalberto (Separation and Purification Technology, 2008)