Abstract
A microorganism antigenically identified as Legionella micdadei but showing a cellular fatty acid profile distinct from that described previously for this species and more similar to that of L. bozemanii has been studied by phenotypic characterization, crossed immunoelectrophoresis, gas-liquid chromatography, and transmission electron microscopy. Although the phenotypic characters, the crossed immunoelectrophoresis, and the ultrastructural features were similar to those of L. micdadei, the fatty acid composition differed significantly from this species; moreover it differed also from L. bozemanii, even though it was quantitatively more similar.
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