Greenfield J, Bigland C H
Appl Microbiol. 1971 Feb;21(2):240-3. doi: 10.1128/am.21.2.240-243.1971.
Comparison of the rates of motility through a semisolid medium of 16 common Salmonella sp., 14 Escherichia coli serotypes, 4 Arizona strains, 2 Escherichia freundii (Citrobacter) isolates, 2 Proteus sp., and 2 Pseudomonas sp. revealed the following. (i) Very closely related bacteria could demonstrate markedly different rates of progression. (ii) All of the salmonellae tested advanced faster than the Proteus and Pseudomonas test cultures but some Salmonella sp., notably S. choleraesuis and S. typhi, progressed relatively slowly compared to many other test cultures. (iii) The mean rate of motility for the fastest 14 Salmonella sp. (1.49 cm/hr) was not statistically greater than the mean value for the 14 E. coli serotypes (1.31 cm/hr) at the 1% level of significance. Selective motility procedures may not be a reliable means of isolating all Salmonella sp. from materials contaminated with other bacteria.
对16种常见沙门氏菌、14种大肠杆菌血清型、4株亚利桑那菌、2株弗氏柠檬酸杆菌（枸橼酸杆菌属）分离株、2株变形杆菌和2株假单胞菌在半固体培养基中的运动速率进行比较，结果如下：（i）亲缘关系非常近的细菌可能表现出明显不同的前进速率。（ii）所有测试的沙门氏菌比变形杆菌和假单胞菌测试培养物前进得更快，但一些沙门氏菌，特别是猪霍乱沙门氏菌和伤寒沙门氏菌，与许多其他测试培养物相比前进相对较慢。（iii）在1%的显著性水平下，最快的14种沙门氏菌的平均运动速率（1.49厘米/小时）与14种大肠杆菌血清型的平均值（1.31厘米/小时）相比，在统计学上并无显著差异。选择性运动程序可能不是从被其他细菌污染的材料中分离所有沙门氏菌的可靠方法。
