5533 DORE AVE. » om . CHICAGO, ILLINOIS 60637 U fey J. M. Gershenson of Kiev, whom I have met personally and whose genetic work on Drosophila of many years ago was of special interest to me, recently sent me a reprint of a paper by his group in the Division of Molecular Biology and Genetics of The University of Kiev, this on the possibility of transfer of genetic information from RNA to DNA during the reproduction of nuclear polyhedrosis viruses. _ Gershenson and his associates feel that this work has not received deserved recognition outside of the USSR. This could well be because most of the papers are in Russian. It is of course also possible that there is skepticism as to whether the experimental evid- ence justifies the conclusions drawn. As a friend of Gershenson, I have promised to see that these investigations are called to the attention of a group of U. S. in- vestigators working in closely related areas. At first I was in- clined to do this as a Letter to the Editor of Science. But on second thought, considering that I am by no means familiar with the technical details of work in this area, I have decided to keep my promise to Gershenson by means of this communication to a group of investigators I happen to know personally. Hence I enclose a copy of the English version of a review article by Gershenson, et al. The Englteh—titte—ef reference to the paper is: "Transfer of Genetic Information from RNA to DNA in Nuclear Polyhedrosis Viruses." i: De a Nomlaova Dutra, ae 1420 gp St py ‘Vixv—at