Your Query returns 14 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Nfkb2NM_01940810090lyt    p49    p52    p50B    p49/p100    NF-kappaB2    164012
NFKB2BC0028449606LYT-10    LYT10    164012
NFKB2AL1219289606164012
NFKB2X837689606164012
NFKB2X786749606164012
NFKB2NM_0025029606LYT10    LYT-10    164012
Nfkb2AF15537310090164012
Nfkb2AF15537210090164012
Nfkb2AF13512510090164012
Nfkb2NT_03969210090164012
Nfkb2BC02742310090lyt    p49    p52    p50B    p49/p100    NF-kappaB2    164012
NFKB2U001119031
NFKB2NT_0300599606164012
NFKB2NM_2044139031

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

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Text2Knowledge ... Yong Huang 2002