KAROLINSKA INSTITUTET

STOCKHOLM 60, SWEDEN

29.2.1°96¢

 

DEPARTMENT OF BACTERIOLOGY

Professor Joshua Lederberg
Stanford University
Medical Center

Dept of Genetics

School of Medicine

Palo Alto, Calif.

Dear Dr. Lederberg:

Thank you very much for the kind letter of February 17%!
and for the valuable comments. We already know that some of ¢<f
the B-strains we have received from other laboratories do
contain prophage.

As you might be interested in the morphology of the
pressureindguced phage I enclose a brief note describing it.

Sin ely yours
L- :
As, Ya:

C . -G. Hedén
Asso.prof.M.D.

P.S. Thank you also very much for the valuable plece of
advice concerning the inability of E.coli B to
ferment maltose. We will look close into the fer-
mentation properties of all the B-strains.

Sincerely yours

doar

Lars Rutberg