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Reversibility of the glucose macrosensors composed of different boronic acids. Each cycle represents a time frame of at least 1 hour. The macrosensors contained either 4-mercaptophenylboronic acid (■, ncontrol = 7 and nglucose = 7), 2-ethoxypyridine-3-boronic acid (●, ncontrol = 6 and nglucose = 7), octylboronic acid (▲, ncontrol = 8 and nglucose = 8), or 3-aminophenylboronic acid (◄, ncontrol = 8 and nglucose = 8).
