Your Query returns 7 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
IGHGPK013209606
IGHGPM139109606
IGHGPAB0161959606
IGHGPAF3004309598A1   
IGHGPAF3004319598A2   
IGHGPAF3004459593
IGHGPU644539606

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

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Text2Knowledge ... Yong Huang 2002