6 spril 1954 I regret that I am unable to give you the results of analysis of urine from the 21 other patients, Knowing that those data would be highly inportant to your committea in its evaluations of the medical status of these patients, we have offsred to undertake radiochsmical urine analysis of all 23 patiznts. The urine from only two patients has been delivered to us in time to permit shiprent to the States and enalysis by this dete, lore recently, samples from five additional patients from the Tokyo University Hospital vere delivered to us, but ve have not es yet received samples fron the 16 patients now hospitalized at the Daiichi Hespital, Respectfully yours, Merril Hisenbud Director, Hsalth and Safety Laboratory United States Atomic Inergy Conmnission (2/ans/hee COs Dr. Nekaidzuni Dr. Keaxehi | Lys