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A) Nanometric silica mesoporous support loaded with glucose and capped with ATP aptamer containing AuNPs for the detection of ATP. B) Selectivity release profile for the sensing material triggered by ATP, CTP, GTP and UDP (0.1 mm after 6 h). PGM=personal glucometer. (Reproduced with permission from Ref. 22. Copyright 2014, Royal Society of Chemistry).
