Your Query returns 8 Accession Numbers:

Query Term	Accession	NCBI Taxonid	Synonyms	Phenotype (OMIM) *
Cacnb3	NM_007581	10090	Beta3 Cchb3	601958
Cacnb3	NW_047784	10116
Cacnb3	NM_012828	10116	CACH3B
CACNB3	BC041811	9606	CACNLB3	601958
CACNB3	NM_000725	9606	CACNLB3	601958
CACNB3	NM_174509	9913
Cacnb3	NT_082049	10090		601958
CACNB3	NT_029419	9606		601958

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

Text2Knowledge ... Yong Huang 2002