Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
C4FNM_0005929606CO4    C4B    120820
C4FNT_0075929606CO4    C4B    120820
C4FNG_0000139606CO4    C4B    120820

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

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Text2Knowledge ... Yong Huang 2002