Brown D J, Munro D S, Platt D J
J Hyg (Lond). 1986 Oct;97(2):193-7. doi: 10.1017/s0022172400065268.
The plasmid pSLT is a cryptic plasmid of 60 megadaltons (Md) present in Salmonella typhimurium LT2. We present evidence that it has a characteristic fingerprint when digested with the restriction enzymes PstI and SmaI. Among a representative collection of S. typhimurium isolates it was present in 67% of strains and was widely distributed amongst different phage types (DT) with the exception of DT10 and U285. Furthermore, its prevalence among veterinary isolates was significantly higher than among human isolates. It was not found among any of the 96 strains representative of other salmonella serotypes currently prevalent and thus appears to be serotype-specific.
质粒pSLT是存在于鼠伤寒沙门氏菌LT2中的一种60兆道尔顿（Md）的隐蔽质粒。我们提供的证据表明，用限制性内切酶PstI和SmaI消化时，它具有特征性指纹图谱。在一组具有代表性的鼠伤寒沙门氏菌分离株中，67%的菌株含有该质粒，并且除了DT10和U285外，它广泛分布于不同的噬菌体类型（DT）中。此外，它在兽医分离株中的流行率显著高于人类分离株。在目前流行的其他沙门氏菌血清型的96株代表性菌株中均未发现该质粒，因此它似乎具有血清型特异性。
