INDIANA UNIVERSITY
BLOOMINGTON, INDIANA

DEPARTMENT OF ZOOLOGY

Jamuary 29, 1952

Dr. Joshua Lederberg
Department of Genetics
University of Wisconsin
Madison 6, Wisconsin

Dear Joshua:

Thank you for your preview of the cancer conference paper. 4s
usual, I am behind the @-ball and have not written a word on mine. I
had arranged with Andervont, as you have, to disregard the title assigned
to me and to speak primarily on cellular heredity as it appears in the
study of Paramecium. I plan to set forth in a 7eneral way the principal
features of the killer, antigen, and mating type stories. There are
certain points of contact with tumor problems that at present seem to
me worth mentioning, though I'11 not know precisely how mich I'll say
about this until I ret something on paper.

As soon as I get an outline or paper ready, I'll shoot a copy to
youe I must first finish e paper for the PNaS which is my part of a
trilogy by Chao, Nanney and myself. as it is, my paper is holding up
the others anc I don't want to prolong the delay.

ith best greetings to you and usther,

Cordially,

THS : jb T. Ee Sonngborn