title: Unusual Enterobacteriaceae: H2S+ Shigella sonnei, one authentic and one false positive due to contamination with the obligate anaerobe Eubacterium lentum.
abstract: A mixture of Shigella sonnei and Eubacterium lentum produced H2S in triple sugar iron agar; however, neither produced any in pure culture. A second culture of S. sonnei, isolated in Japan, is thought to be the first documented H2S+ Shigella.
mesh_terms: D000362:Agar; D000693:Anaerobiosis; D002675:Child, Preschool; D004405:Dysentery, Bacillary / Q000382:microbiology; D005260:Female; D006801:Humans; D012764:Shigella sonnei / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism*
chemical_list: D000362:Agar