PubMed:2573605 / 387-531 JSONTXT

{"project":"sentences","denotations":[{"id":"TextSentencer_T3","span":{"begin":0,"end":144},"obj":"Sentence"},{"id":"T3","span":{"begin":0,"end":144},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Nonequilibrium pH gradient gel electrophoresis showed that the purified enzyme consists of four major isoproteins designated GDH 1, 2, 3, and 4."}