Exonuclease III (XthA) Enforces In Vivo DNA Cloning of Escherichia coli To Create Cohesive Ends. Hunter December 14, 2020 December 14, 2020 No Comments on Exonuclease III (XthA) Enforces In Vivo DNA Cloning of Escherichia coli To Create Cohesive Ends. WordPress › Error There has been a critical error on this website.Learn more about troubleshooting WordPress.