PMC:1315279 / 733-741 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T390","span":{"begin":4,"end":5},"obj":"SYM"},{"id":"T391","span":{"begin":5,"end":6},"obj":"HYPH"},{"id":"T392","span":{"begin":6,"end":7},"obj":"SYM"}],"text":"am68−/− "}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T162","span":{"begin":4,"end":5},"obj":"SO_EXT:sequence_nullness_or_absence"},{"id":"T163","span":{"begin":6,"end":7},"obj":"SO_EXT:sequence_nullness_or_absence"}],"text":"am68−/− "}