_:vb50935981 . _:vb50935981 . _:vb50935981 "IEDB:RV"^^ . _:vb50935981 . _:vb50935981 "A beta-lactam allergy that has_allergic_trigger aztreonam."^^ . _:vb50935981 . _:vb50935981 . _:vb50935981 "url:https://www.ncbi.nlm.nih.gov/pubmed/1991925"^^ .