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Examples of nanocarriers where synthetic DNA strands keep the carrier in a closed state until a correct trigger, i.e., a single-stranded DNA sequence, is introduced to the system. (a) DNA-based nanobox. (b) Mesoporous silica nanoparticles with DNA strands acting as control gates. (c) Condensed mucin glycoproteins that are transiently stabilized by DNA strands.
