CENTRAL BACTERIOLOGICAL LABORATORY
OF STOCKHOLM CITY

Box 177, Stockholm 1, Sweden

 

July 31,1957

Dr. Je Lederberg

Dept. of Genetics
University of Wisconsin
Madison, Wisconsin
U.S.A.

Dear Dr. Lederberg,

As you may know, I have been asked to write a re-
view on bacterial protoplasts to appear in the 1958 is-
Sue of the Annual Review of Microbiology. I am therefore
eager to follow recent advances in this field. In this
connection I have heard from Dr. Marr at the University
of California that you are able to grow protoplasts on
semi-solid media. Dr. Klieneberger-Nobel at the Lister
Institute has told me about some mutation work re-
lated to protoplasts. Now I wonder whether you have fnxrx
thex reports on these things in the press or ready for
publication this year. Also, if you know of other work
going on on protoplasts in the U.S. I’ would greatly app-
reciate information on this point. - I have recently
made some work on Proteus I forms, iniicating the presence
of DAP in this growth forms.

I have also written to Drs. Spiegelman, B. Davis and
@erhardt in this matter.

Yours Sincerely,

Claes Weibull