| Simmons, J | <person> U.S. Bacteriologist, 1890-1954. See: Simmons' citrate medium. (05 Mar 2000) |
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| Simmons' citrate medium | A diagnostic medium used in the differentiation of species of Enterobacteriaceae, based on their ability to utilise sodium citrate as the sole source of carbon. (05 Mar 2000) |
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