PubMed:819433 / 854-973 JSONTXT

{"project":"sentences","denotations":[{"id":"T9","span":{"begin":0,"end":119},"obj":"Sentence"},{"id":"T9","span":{"begin":0,"end":119},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The relationship of enzymatic reaction velocity to pH was complex, with an optimum at pH 7.4 for all substrates tested."}