PMC:7543426 / 6503-6547 JSONTXT

{"project":"2_test","denotations":[{"id":"32914853-31217430-61098655","span":{"begin":6,"end":8},"obj":"31217430"},{"id":"32914853-24813622-61098656","span":{"begin":10,"end":12},"obj":"24813622"}],"text":"ibed [14, 15]. Ultrathin sections were stain"}