Bacterial expression systems are becoming more versatile, say Swedish contractor NorthX Biologics and Austrian technology firm enGenes Biotech, who have teamed up to create an integrated, E.coli-based protein production platform. E.coli-based protein expression systems are not a new idea. They have been around since the 1970s and used to make everything from recombinant human insulin to treatments for growth hormone deficiency. They are generall…