Fig. 7. Hydrophobic interaction chromatography of combined and concentrated fractions 27–36 from the DEAE anion exchange chromatography described in Fig. 5. This concentrate contained laminarinase 1 activity and was derived from the midgut gland of C. destructor. Protein concentration (mg ml^–1, ) and laminarinase activity (µmol reducing sugars produced min^–1 ml^–1, ) in the collected fractions.