1887

Abstract

SUMMARY: A new type of phase variation which changes in one direction only has been noted in some members of the Salmonella group. This was found in association with three hitherto undescribed flagellar antigens, z, z and z, which are characterized. These occurred naturally with particular frequency in Salmonella group E and in cultures which possessed an alternate g, s, t phase. Two of these antigens, z and z, were found less frequently in other O groups and in organisms possessing other alternative phases. Although the antigens in question can be readily transformed to the alternate phases of the organisms in which they occur, these alternate phases could not be changed to z, z or z.

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/content/journal/micro/10.1099/00221287-23-3-583
1960-12-01
2019-10-15
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