Consiglio Nazionale delle Ricerche

Laboratorio Internazionale di Genetica e Biofisica
international Laboratory of Genetics and Biophysics

Napoli August 7, 1968

80125 Napoli via G. Marconi 10 80100 Napoli casella postale 3061 telefono 615.122  telegrammi labgebi

Dr. Joshua Lederberg

Department of Genetics

Stanford University School of Medicine
Stanford Medical Center,

Palo Alto, California 94304

Dear Dr. Lederberg,
thank you very much for your letter of

July 24th. We have now some rather good indirect evidence that
the CD,T we observe is really thymine. However, I am going to

write to Dr. A. L. Burlingame and try to get the high resolu=

tion analysis.

Sincerely yours,

Cerny \ Lan

Edugrdo Scarano