PMC:1635039 / 2832-2837 JSONTXT

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{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T2543","span":{"begin":0,"end":5},"obj":"PR_EXT:000000046"}],"text":"TGF-β"}

{"project":"craft-ca-core-dev","denotations":[{"id":"T2402","span":{"begin":0,"end":5},"obj":"PR:000000046"}],"text":"TGF-β"}