PMC:7571312 / 121727-121851 JSONTXT

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{"project":"LitCovid-sentences","denotations":[{"id":"T655","span":{"begin":0,"end":124},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The assay reaction buffer contained 20 mM Tris–HCl (pH 7.3), 100 nM NaCl, 1 mM EDTA, 5 mM TCEP, and 25 μM peptide substrate."}

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