_:vb50939867 . _:vb50939867 . _:vb50939867 "A male infertility due to acephalic spermatozoa that is characterized by autosomal recessive inheritance of acephalic spermatozoa that has_material_basis_in mutation in the SUN5 gene on chromosome 20q11."^^ . _:vb50939867 "url:https://www.ncbi.nlm.nih.gov/pubmed/27640305"^^ . _:vb50939867 . _:vb50939867 . _:vb50939867 .