Your Query returns 8 Accession Numbers:

Query Term	Accession	NCBI Taxonid	Synonyms	Phenotype (OMIM) *
aldh9a1	BC047176	7955
Aldh9a1	NM_019993	10090	ESTM40 TMABA-DH	602733
Aldh9a1	NW_047399	10116
ALDH9A1	NM_000696	9606	E3 ALDH4 ALDH7 ALDH9 TMABADH	602733
Aldh9a1	NT_078306	10090		602733
Aldh9a1	BC003297	10090	TMABA-DH	602733
Aldh9a1	NM_022273	10116	Tmaba-dh
ALDH9A1	NT_004668	9606		602733

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

Text2Knowledge ... Yong Huang 2002