Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
IGHG3h2AF3004349598A1   
IGHG3h2AF3004359598A2   
IGHG3h2AF3004479593
IGHG3h2AF3004519600

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

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Text2Knowledge ... Yong Huang 2002