PMC:1382200 / 2472-2495 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T3422","span":{"begin":2,"end":3},"obj":"SYM"},{"id":"T3423","span":{"begin":4,"end":12},"obj":"VBN"},{"id":"T3424","span":{"begin":13,"end":15},"obj":"FW"},{"id":"T3425","span":{"begin":16,"end":21},"obj":"FW"}],"relations":[{"id":"R630","pred":"advmod","subj":"T3424","obj":"T3425"},{"id":"R637","pred":"advmod","subj":"T3425","obj":"T3423"}],"text":"a2+ required in vitro f"}