“…The methodological core of the affinity method for the preparation of nigrin was its binding to a D-galactose matrix obtained by acid treatment of Sepharose 6B. Further elution with either lactose or D-galactose allowed the isolation of D-galactose-binding proteins (Barbieri, Zamboni, Montanaro, Sperti, & Stirpe, 1980;Citores et al, 1996;Olsnes, Stirpe, Sandvig, & Pihl, 1982). Nonetheless, it was observed that nigrin binding to the acid-modified beads to a variable extent depended on the temperature.…”