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Binding assays of aptamer CCFM641-5 to trypsin-treated or proteinase K-treated B. bifidum. (A) Flow cytometric analysis of aptamer CCFM641-5 binding affinity for trypsin-treated B. bifidum; (B) Flow cytometric analysis of aptamer CCFM641-5 binding ability to proteinase K-treated B. bifidum.
