PMC:1064854 / 652-654
Annnotations
craft-sa-dev
{"project":"craft-sa-dev","denotations":[{"id":"T849","span":{"begin":1,"end":2},"obj":"SYM"}],"text":"α−"}
craft-ca-core-ex-dev
{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T671","span":{"begin":1,"end":2},"obj":"SO_EXT:sequence_nullness_or_absence"}],"text":"α−"}