PubMed:26260788 / 761-882 JSONTXT

{"project":"sentences","denotations":[{"id":"T5","span":{"begin":0,"end":121},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"These proteins, which are present in low amounts, are difficult to purify, preventing structural and functional analysis."}