Your Query returns 8 Accession Numbers:

Query Term	Accession	NCBI Taxonid	Synonyms	Phenotype (OMIM) *
Sin3b	NM_009188	10090	2810430C10Rik	607777
Sin3B	AF038848	10090		607777
Sin3b	NT_039467	10090		607777
Sin3b	BC021160	10090		607777
Sin3b	BC020049	10090		607777
SIN3B	NT_011295	9606		607777
SIN3B	XM_050561	9606		607777
SIN3B	BC063531	9606	KIAA0700	607777

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

Text2Knowledge ... Yong Huang 2002