Nonpilar surface appendages of colony type 1 and colony type 4 gonococci

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Differential susceptibility of type 1 and type 4 gonococci to chlorhexidine (Hibitane).

Virulent Type 1 gonococci have been shown to be much more suceptible to the killing action of Hibitane gluconate than the avirulent Type 4. Those exploring the possibility of genital prophylaxis as a means of controlling gonorrhoea might find Hibitane worthy of consideration.

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Effect of colony type and pH on surface charge and hydrophobicity of Neisseria gonorrhoeae.

The effect of colonial variation and growth at pH 7.2 or pH 6.0 on the surface properties of Neisseria gonorrhoeae was assessed by the use of two-phase partitioning and hydrophobic interaction chromatography. Cells grown at pH 7.2 tended to be both hydrophobic and to possess a slight negative charge. Growth at pH 6.0 appeared to decrease hydrophobicity and to increase the negative surface charg...

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Variable surface protein Vmm of Mycoplasma mycoides subsp. mycoides small colony type.

A variable surface protein, Vmm, of the bovine pathogen Mycoplasma mycoides subsp. mycoides small colony type (M. mycoides SC) has been identified and characterized. Vmm was specific for the SC biotype and was expressed by 68 of 69 analyzed M. mycoides SC strains. The protein was found to undergo reversible phase variation at a frequency of 9 x 10(-4) to 5 x 10(-5) per cell per generation. The ...

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Genetic transformation of colony type in Xanthomonas phaseoli.

The first demonstration of transformation (Griffith, 1928) was concerned with type-specific capsular polysaccharides of pneumococci. Such transformations of capsular types usually are accompanied by a change in colony type since most investigators have studied transformation of R cells which produce little or no capsular material. Coiacomitant transformation of capsular and colony type has been...

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ژورنال

عنوان ژورنال: Infection and Immunity

سال: 1976

ISSN: 0019-9567,1098-5522

DOI: 10.1128/iai.14.1.266-270.1976