brofessor J.Lederberg Stanford University Shhool of From:Dr.kamal Abdou Yousset 37 Str.E1l Asr #1 Aini(apt.5) Cairo/#gypt Medicine, Palo Alto,Calffornia U.S.A. Dec.7,1968 ear Sir: I devoted many of the best years of my life for the practical study of the bacterial nucleus and I wrote three unpublished articles on the bacterial nucleus ( and delivered orally in front of three scientific societies namely the Asr #1 Aini clinical society,the Abbassia fever hospital clinical society (with the attendance of NAMRU 3 personnel) and the bacteriology Institution of Karolinska institutet, Stockholm,oweden eleven years ago ). My work look contradictory to what is generally accepted in this field although 1 believe that in essence there is no such contradiction but only my work 1 believe is more elaborate and precise. 1 would appreciate very much to have your opionion in my work which I will send to you as soon as I receive a notice from you. Awaiting your news, thanking you in advance for your kindness, I remain dear Sir, , bincerely yours, K,A.Youssef (Research worker)