Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
B-L beta minorAF5155889031BA4v   
B-L beta minorAF5393989031BA12   
B-L beta minorAF5393999031BC1   
B-L beta minorAF5394009031BC2v   
B-L beta minorAF5394019031BC7   

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

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Text2Knowledge ... Yong Huang 2002