Eight of 22 non-capsulate strains of previously isolated from primary school children were re-identified as by aminopeptidase reactions and polysaccharide production. was not identified amongst 91 non-capsulate strains of isolated from adults attending the Genito-urinary Medicine clinic, Westminster Hospital, London. The biochemical reactions of strains were similar to those of and , but could be distinguished from these organisms by examination of β-galactosidase activity, carbohydrate reactions and polysaccharide production. Sodium dodecyl sulphate-polyacrylamide gel electrophoresis revealed closer similarity of to than to the pathogenic spp. An additional finding was variation in the position of one of the major proteins of in the 34-39-Kda region.


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