PMC:340383 / 444-448 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T302","span":{"begin":2,"end":4},"obj":"NNS"}],"text":"4 bp"}

{"project":"craft-ca-core-dev","denotations":[{"id":"T75","span":{"begin":2,"end":4},"obj":"SO:0000028"}],"text":"4 bp"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T143","span":{"begin":2,"end":4},"obj":"SO_EXT:0000028"}],"text":"4 bp"}