Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
EXTLBC0655289606EXTL1   
EXTLNM_0044559606EXTL1   
EXTLAF1043923659
EXTLU671919606

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

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Text2Knowledge ... Yong Huang 2002