Cloning-and-Overexpression-of-Imp-OstA-and-essential-Escherichia-coli-outer-membrane-protein-with-a-possible-role-in-lipid-transport-Lekatz-Leslie Cloning-and-Overexpression-of-Imp-OstA-and-essential-Escherichia-coli-outer-membrane-protein-with-a-possible-role-in-lipid-transport-Lekatz-Leslie