Valtonen M V, Plosila M, Valtonen V V, Mäkelä P H
Infect Immun. 1975 Oct;12(4):828-32. doi: 10.1128/iai.12.4.828-832.1975.
The cell wall O antigen is known to affect mouse virulence of Salmonella. We have shown earlier that S. typhimurium expressing somatic antigen 9,12 is less virulent than its 4,12 sister transductants in mice after intraperitoneal inoculation, suggesting that the 4,12-type O antigen is connected with high virulence in mice. In this report we show, in accord with this suggestion, that when the naturally occurring O-9,12 S. enteritidis is made O-4,12 by transduction, its virulence is increased. The difference between O-9,12 and O-4,12 sister transductants is highly significant, with P less than 0.001.
已知细胞壁O抗原会影响沙门氏菌对小鼠的毒力。我们之前已经表明,表达菌体抗原9,12的鼠伤寒沙门氏菌在腹腔接种后对小鼠的毒力低于其4,12型姐妹转导子,这表明4,12型O抗原与小鼠的高毒力相关。在本报告中,与这一推测一致,我们发现当通过转导使天然存在的O-9,12肠炎沙门氏菌变为O-4,12型时,其毒力会增加。O-9,12和O-4,12型姐妹转导子之间的差异非常显著,P值小于0.001。