title: Gram-negative infections of spine.
mesh_terms: D001424:Bacterial Infections; D003932:Heroin / Q000009:adverse effects; D006801:Humans; D007592:Joint Diseases / Q000209:etiology; D012446:Sacroiliac Joint; D013122:Spinal Diseases / Q000382:microbiology*; D013166:Spondylitis / Q000209:etiology; D019966:Substance-Related Disorders / Q000150:complications
chemical_list: D003932:Heroin