MEMO FROM TO: TX

J. LEDERBERG Jr. Moseley Rc
GENETICS DEPARTMENT

STANFORD UNIVERSITY OCT 20 1970

STANFORD, CALIFORNIA

 

I am a little puzzled about the founda-
tions for such an emphatic statement..The
only.data of which I am aware that would bear
on.your conclusion concern the greatly in-
creased. radiation-sensitivity of cells from.
hemozygotes for Xeroderma pigmentosum, which
is sufficiently rare that it may have little
hearing on acceptable population doses. Hew-
ever, the heterozygotes have not vet been
carefully studied, and as-far as I can see
there. may well be a significant polymorphism
for.. radiation-sensitivity in man Gwhich is
not to say that I offer any -evidenee fer it.)

If vou can give me any other ‘sources, I _
would — be grateful for them.

a os : Sincerely, ae