CGSC Strain#: 5219
Strain Designation: W4520     
Source of Strain: Y. Hirota
Sex: F'
Chromosomal Markers: relA1,
metB1,
λRStrain Comments: - λR-- Lambda resistant, locus unknown.
References: - Hirota, Y., P.H.A. Sneath 1961. F' and F mediated transduction in Escherichia coli K12. Jpn.J.Genet. 36:307-318
- Sneath, P.H.A. 1962. Sex factors as episomes. British Med.Bull. 18:41-45