PMC:340383 / 454-458 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T305","span":{"begin":2,"end":4},"obj":"NNS"}],"text":"4 bp"}

{"project":"craft-ca-core-dev","denotations":[{"id":"T76","span":{"begin":2,"end":4},"obj":"SO:0000028"}],"text":"4 bp"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T144","span":{"begin":2,"end":4},"obj":"SO_EXT:0000028"}],"text":"4 bp"}