PMC:1315279 / 22610-22612 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T5069","span":{"begin":1,"end":2},"obj":"SYM"}],"text":"8−"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T4903","span":{"begin":1,"end":2},"obj":"SO_EXT:sequence_nullness_or_absence"}],"text":"8−"}