Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
SCYA21BC0279189606SLC    MGC34555    TCA4    CKb9    CCL21    602737
SCYA21NM_0029899606SLC    CKb9    TCA4    MGC34555    CCL21    602737
Scya21NM_01112410090ALP    SLC    plt    CKb9    Tca4    6Ckine    6CKBAC2    Scya21b    Ccl21b    602737
Scya21NM_01133510090SLC    CKb9    TCA4    6Ckine    6CKBAC1    Scya21a    Ccl21a    602737

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

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Text2Knowledge ... Yong Huang 2002