Your Query returns 12 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CAMK2BC0190709606CAMKB    CAM2    MGC29528    CAMK2B   
CAMK2NM_0012209606CAM2    CAMKB    MGC29528    CAMK2B   
CAMK2NM_1720829606CAM2    CAMKB    MGC29528    CAMK2B   
CAMK2NM_1720839606CAM2    CAMKB    MGC29528    CAMK2B   
CAMK2NM_1720849606CAM2    CAMKB    MGC29528    CAMK2B   
CAMK2NM_1720789606CAM2    CAMKB    MGC29528    CAMK2B   
CAMK2NM_1720799606CAM2    CAMKB    MGC29528    CAMK2B   
CAMK2NM_1720809606CAM2    CAMKB    MGC29528    CAMK2B   
CAMK2NM_1720819606CAM2    CAMKB    MGC29528    CAMK2B   
Camk2NM_01251910116CAMK1    Camki    RATCAMKI    Camk2d   
Camk2AF2835109940
caMK2AJ6289752711

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

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Text2Knowledge ... Yong Huang 2002