INST. FOR MEDICINSK CELLFORSKNING OCH GENETIK

MEDICINSKA NOBELINSTITUTET
KAROLINSKA INSTITUTET

ee Stockholm, October 1. 1971.

Tel. 340560

INSTITUTE FOR MEDICAL CELL RESEARCH
AND GENETICS

MEDICAL NOBEL INSTITUTE

KAROLINSKA INSTITUTET

$-104 01 STOCKHOLM 60, SWEDEN

Professor Joshua Lederberg
School of Medicine

Dept. of Genetics

Stanford University
Stanford Calif. 94305 USA

Dear Joshua:

The work on chromosome recognition, and now also on the re-
cognition of chromosome parts is developing at a tremendous pace
at present.

New techniques for the study of chromosome structure are ra-
pidly coming along and some look promising.

The congress for human genetics in Paris a couple of weeks
ago showed that a surprisingly great number of laboratories all
over the world are already working with the fluorescence techniques
and applying them on a variety of fields, human genetics, hybrid
studies, phylogenetic studies, Drosophila etc, and our system for
classification of the human chromosomes has just been accepted
as standard (Rungis, Sept. 1971).

Thus we believe it would be useful to have, as soon as possible,
a good symposium on the field, to exchange information and to coordi-
nate efforts.

We are preparing a symposium here in Stockholm on "Recognition
of chromosomes and chromosome regions ~- techniques and applications
in biology and medicine" (provisional title) planned for 2-3 days and
preferably placed at the end of May 1972. A group of 20-25 people is
envisaged.

This is a preliminary inquiry whether I could impose upon you
to participate and - if you are interested - also to contribute some
advice. It would be of very special value to have, at the beginning
of the symposium, a presentation of more general scope discussing
the field and its eventual value in a general way and there is no
Professor J. Lederberg October 1. 1971. 2.

person better suited for that than you with your wide experience
from the entire field of genetics. ,

We can offer you first class transportation to and from Stock-
holm and the costs of living here. Probably the symposium will be
one of the "Nobel-symposia" which can be kept on a quite high standard
and if that can be arranged in spite of the shortness of the time,
we expect to be able to pay for all or most of the invited persons.

I will also write Lejeune asking him to comment on the human-
genetics-aspects.

I expect to have definite information about the technicalities
about 2 months from now but would be very grateful for your points

of view.

With kind personal regards,

Vo .

Torbj6rn Cas

   

rsson

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