UNCLASSIFIED 6 April 1954 Dr. R. Kobayashi ~ 2 (“az ee a U L 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 important to your committee in its evaluations of the medical status of these patients, we have offered to undertake radiochemical urine analysis of all 23 patients. The urine from only two patients has been delivered to us in time to permit shipment to the States and analysis by this date, More recently, samples from five additional patients from the Tokyo University Hospital were delivered to us, but we have not as yet received samples from the 16 patients now hospitalized at the Daiichi Hospital. Respectfully yours, Merril Eisenbud Director, Health and Safety Laboratory United States Atomic anergy Commission ME/ams/hee CC: Dr. Nakaidzumi Dr, Kakehi