PMC:7143804 / 58912-58975 JSONTXT

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    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T531","span":{"begin":0,"end":63},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The crosses are used for alignment under an optical microscope."}