E. coli Genetic Stock Center J U L 1 7 1973

Department of Microbiology
“ Yaie University School of Medicine

~ "New Hovere Conmectteut, 06510 July 13, 1973
Dear Josh: :

We just received, by a'very devious route, a subculture of W4597,
a galU™ strain, which I believe is your galgg. Am I correct in that?
And you Could please tell me the ancestry of this strain? It was de-
scribed as a prototroph by the person who gave it to us.

Once again, I'd appreciate your help very much.

Sincerely,

Barbara

Barbara J. Bachmann, Curator