THE PRESBYTERIAN HOSPITAL

in the City of New York
ai

COLUMBIA-PRESBYTERIAN MEDICAL CENTER

622 WEST 168TH STREET
NEW YORK 32, N.Y.

February Zlst, 1958

Dr. Joshua Lederberg
Department of Medical Genetics
School of Medicine

Genetics Building

the University of Wisconsin
Madison 6, Wisconsin

Dear Dr. Lederberg:

Grace Leidy and I are very pleased that you are in
the process of studying the nutritional requirements of
Henophilus. We shipped yesterday the cultures listed below.

Cascia Sa and Ra

Santo Sb and Rb

huggiero Se and Re

Garf Sd and Rd

Pell Se and Re

Dingles Sf and kf
H. pareinfluenzae

Fiddess

Bossarelli
H. suis #7356-8 (H. parasuis)

H. aegyptius
#15, #46

I suppose we have had more experience with Sd and Kd
than with any other type.

In answer to your guestion on irregularity in the DPN

(continued)

 

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requirement of Rd, we have not studied this in a sufficiently
quantitative fashion to answer this.

We are looking forward to hearing about your results.

with kindest regards,

Yours,

AMEE, Anpowden_
Hattie L, Alexander, M. D.

Associate Professor of Pediatrics

College of Physicians and Surgeons
Columbia University

HEAtns