Prolonged suppression of trans- gene expression for up to 7 days was observed after doxycycline was removed from the cultures , but eventual recovery of surface expression was complete , and the absolute time to recovery was directly proportional to the initial concentration of the drug .
prolonged suppression of trans- gene expression for up to 7 days was observed after doxycycline was removed from the cultures , but eventual recovery of surface expression was complete , and the absolute time to recovery was directly proportional to the initial concentration of the drug .
O O O B-other_name B-other_name I-other_name O O O O O O O O B-other_organic_compound O O O O O O O O O O B-other_name I-other_name O O O O O O O O O O O O O O O O O O O O