When querying for ontology terms, Gemma propagates these terms to include any datasets with their child terms in the results. This function returns these children for any number of terms, including all children and the terms itself in the output vector
get_child_terms(terms)
An array containing descendends of the annotation terms, including the terms themselves
get_child_terms("http://purl.obolibrary.org/obo/MONDO_0000408")
#> [1] "http://purl.obolibrary.org/obo/MONDO_0000393"
#> [2] "http://purl.obolibrary.org/obo/MONDO_0000395"
#> [3] "http://purl.obolibrary.org/obo/MONDO_0000408"
#> [4] "http://purl.obolibrary.org/obo/MONDO_0016011"
#> [5] "http://purl.obolibrary.org/obo/MONDO_0850461"