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ARMY MEDICAL SERVICE GRADUATE SCHOOL

WALTER REED ARMY MEDICAL CENTER
WASHINGTON 12, D.C.

IN REPLY REFER TO

Bacteriology Department

24, October 1952

Dear Dr. Lederberg,

I apologize for the great delay in answering your letter of the
3rd. I just returned from my wedding trip yesterday morning,
and much unfinished business was piled on my desk,

In the next week or so I should be able to send to you a
detailed accoumt of our work with copper - including the method
of production of the small colony forms, Suffice it for the
present to state that we have been successful in bringing about
the change only in a B strain, We have yet to try K 12, but I
would not be surprised if it proves to be nore resistant to the
action of copper than the B strain,

It would be of considerable intsrest and benefit to the over-all
problem as well as myself to engage your help and interest

as far as the genetic aspects of this phenomenon are concerned,
You shall certainly hear from me again very soon.

a

Sincerely yours,

t dbicet L lhe

Lawrence L, Weed \
4 et

 

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