KOV 9 1966
UNIVERSITY OF CALIFORNIA, LOS ANGELES

 

 

BERKELEY * DAVIS * IRVINE * LOS ANGELES * RIVERSIDE * SAN DIECO * SAN FRANCISCO SANTA BARBARA * SANTA CRUZ
tremens

 

A Tribute to the Paople of Catliomnig

DEPARTMENT OF MEDICAL MICROBIOLOGY
AND IMMUNOLOGY

SCHOOL OF MEDICINE

THE CENTER FOR THE HEALTH SCIENCES

LOS ANGELES, CALIFORNIA 90024

November 7, 1966

Dr. Joshua Lederberg
Department of Genetics
Stanford University
School of Medicine
Palo Alto, California

Dear Josh:

Your nice article in The Washington Post (October 30, 1966) has been
brought to my attention: it was especially valuable for me since it came

from you.

Yes, you have indeed accurately pin-pointed the weak part in our
report and we are actively working on this subject. In particular we have
some evidence now that the correct timing may be between the 7th and 12th
day of pregnancy. More accurate timing will follow after we have deter-
mined (tritiated thymidine) the schedule of DNA synthesis in the foetus!
neurons: the data in the literature (regenerating liver) suggest that growth
hormone has most pronounced action at the peak of DNA synthesis. Our other
effort will be to introduce growth hormone directly into the foetus. Short
injection period will eliminate development of immunity. At least two psy-
chology departments are planning to do the behavioral study.

ACHAIMY >

With best regards,

Steve
Stephen Zamenhof, Ph.D.
Professor of Microbial Genetics