Zsigray R M, Lawton W D, Surgalla M J
Infect Immun. 1983 Feb;39(2):974-6. doi: 10.1128/iai.39.2.974-976.1983.
An F-lac plasmid from Escherichia coli was transferred to virulent Yersinia pestis, resulting in the repression of virulence. The Y. pestis F-lac clones retained all of the known virulence traits but were avirulent and calcium independent. Every lac segregant derived from the F-lac clones was fully virulent and calcium dependent.
来自大肠杆菌的F - lac质粒被转移到有毒力的鼠疫耶尔森菌中,导致毒力受到抑制。鼠疫耶尔森菌F - lac克隆保留了所有已知的毒力特征,但无毒力且不依赖钙。从F - lac克隆衍生出的每个lac分离株都具有完全的毒力且依赖钙。