PMC:1914394 / 20065-20069 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T11107","span":{"begin":1,"end":2},"obj":"SYM"},{"id":"T11108","span":{"begin":2,"end":3},"obj":"HYPH"},{"id":"T11109","span":{"begin":3,"end":4},"obj":"SYM"}],"text":"1−/−"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T10914","span":{"begin":1,"end":2},"obj":"SO_EXT:sequence_nullness_or_absence"},{"id":"T10915","span":{"begin":3,"end":4},"obj":"SO_EXT:sequence_nullness_or_absence"}],"text":"1−/−"}