UNIVERSITY COLLEGE LONDON
DEPARTMENT OF ZOOLOGY

Telephone : EUSton 7050 GOWER. STREET WCI
Professor P. B. Medawar

 

15th December, 1960.

Dear Joshua,

Very many thanks for puttins me onto the Holman reference
about "second set" reactions. I did know about this work, but too late
to workpinto any of my public lectures. Asa matter of fact, I have
never understood the fuss that people have made over this so-called
second set reaction, because the principle underlying it was really
established by the tumour transplanters in the early 190's! My own |
demonstration owed its importance mainly to the fact that old Leo Loerb
hed flatly denied that anything of the kind occurred with homosrafts of
normal tissue, Anyhow, I shall certainly work in a reference to Holman
at the next suitable opvortunity.

I got back from Stockholm last nicht in a somewhat stuporose.
conditions George Klein was in sood form and his young people are daing
excellent work. If it is not sn altogether ridiculous ambition, I am
rather looking forward to undertaking a little scientific research myself
in the not too distant future!

Yours ever,

Professor Joshua Lederberg,
Department of Genetics,

Stanford University,

Medical Center, okt
Palo Alto, Your uu cw Ine Cromoney Ut «
Celifornia. :