Memo from To:
JOSHUA LEDERBERG tare@eun >

AUG 22 72
Your reprints

Twas quite thrilled zto see these.

Just a few days ago I had asked around the Lab
if anyone had seen anything on just the subject
of the Sanes-Ckun paper. Have you thought of
looking further into DNA repair capacity, as
a function of the age of the animal; it is a
reasonablek bet that you will find an age=defend
ent effect, and there is then some very interes-
ting comparative biochemistry to look into
(mice vs. elephants). It might even be pos-
sible to do experiments in situ -- eg with
something like mustard by carotid infusion as
the inciting stimulus. I see you do hint
at this iesue in your closing santence.

I hope you do publish your DNA work; I can fully
understand the distractions; it still should be
a cost-effective optionk for the use of your
time once you have a lab going.

We look forward to seeing you,

 

PROFESSOR JOSHUA LEDERBERG
Department of Genetics
School of Medicine

Stanford University
Stanford, California 94305