_:vb50946415 . _:vb50946415 . _:vb50946415 . _:vb50946415 "url:https://pubmed.ncbi.nlm.nih.gov/30042186/"^^ . _:vb50946415 "An azoospermia characterized by azoospermia resulting from meiotic arrest at prophase I that has_material_basis_in homozygous or compound heterozygous mutation in XRCC2 on chromosome 7q36.1."^^ . _:vb50946415 . _:vb50946415 .