Your Query returns 16 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
IL9M865939606146931
Il9NM_00837310090Il-9    146931
Il9XM_34148710116
Il9NW_04748710116
IL9AF2423009606146931
IL9AF2445759606146931
IL9AF3611059606146931
IL9NM_0005909606P40    HP40    IL-9    146931
Il9NT_03958610090146931
IL9AY32789542415
IL9BC0662849606HP40    P40    IL-9    146931
IL9BC0662879606HP40    P40    IL-9    146931
IL9BC0662839606HP40    P40    IL-9    146931
IL9BC0662859606HP40    P40    IL-9    146931
IL9BC0662869606HP40    P40    IL-9    146931
IL9NT_0347729606146931

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002