Phase variation in Salmonella typhimurium phagetype

摘要: The phase variation of phagetype was observed in cultures Salmonella typhimurium collected from Xinjiang Uygur Autonomous Region during 1980-1993. A few 4774 or 4776(full type) may change into another phagetype, i.e. 4000(phase 1) 0774 and 0776 (phase 2). In reverse, more strains these 4000 0774(0776) easily back their original 4776. But some can to 0776(phase 2), 0774(phase 2) also 1). Similarly, a 7776(full 7000(phase More 7000(or 7002) reverse 7776 7774. variability is 15.6% full type 1 2, 53.2% 2 type. Understanding will be helpful phagetyping, significance on epidemiological analysis infection.