identified by the medical team, the patient receives x-ray studies, colonoscopy,etc. at one of the excellent medical facilities in Honolulu. The Brookhaven Medical Team Physicians, nurses, laboratory technicians, translators, and administrative personnel constitute a “Brookhaven medical team.” This phrase does not adequately convey the variegated makeup of the medical missions that are mounted by the Medical Department of Brookhaven National Laboratory. For example, the following medical specialties were represented at least once during the four 1983-84 missions: Dentistry (pediatric and adult) Endocrinology Family Practice Gastroenterology Hematology Nephrology Neurology Obstetrics and Gynecology Ophthalmology Pediatric Cardiology Pediatrics Physical Medicine Rheumatology Surgery The physicians and dentists represented in this listing are forthe most partaffiliated with excellent medical centers throughout the U.S., including Boston University, the National Institutes of Health, Western Reserve, Ohio State University, the University of Miami, the State University of New York (Stony Brook), the University of California (Irvine), Walter Reed Army Hospital, and Wills Eye Hospital (Jefferson Medical College). Other physicians were recruited from private practices in Honolulu, HI, and Portland, ME. The Brookhaven medical team, therefore, represents a broad cross section of medical practitioners in the U.S.; only two of the physicians are, in fact, from Brookhaven National Laboratory. Similarly, all the nurses and translators and half the laboratory personnel are Micronesian. It is clear, therefore, that the Brookhaven medical team is only slightly “Brookhaven” in professional composition. The ability to recruit excellent doctors from around the U.S. has been one of the strengths of the medical program. While the volunteer doctors provide the necessary medical examinations and care that are the core of each mission, they also provide consultations in their respective specialties that are often difficult to obtain in the remoteatolls that are visited. They also are available for consultations at the Marshall Islands district hospitals on Ebeye and Majuro. Their participation in the medical missions entails in every instance some degree of personal sacrifice. The medical program cannot satisfactorily repay them for their personal and professional efforts in assisting the biennial missions. In recent years the Straub Hospital and Clinic in Honolulu has been selected as the diagnostic and therapeutic center for Marshallese requiring Brookhaven National Laboratory-sponsored medical referrals. The Brookhaven program is most fortunate in having Dr. Henry Preston of the Department of Internal Medicine at the Straub Clinic volunteer his service as the coordinator and overseer of their care while in Honolulu. The Marshall Islands medical program is very grateful for his fine work. Laboratory Support Most medical activities and all laboratory services of the Brookhaven National Laboratory medical surveys are conducted aboard a chartered U.S. Oceanography vessel, Liktanur Il. Exceptions include the examinations performed in Brookhaven National Laboratory facilities on Ebeye and pediatric examinations at Rongelap and Utirik which, for reasonsof the children’s safety, are carried out in dispensaries on shore. Laboratory support during the medical trips is provided bythree to four technicians. Routine five-parameter blood counts are performed on a J.T. Baker 500A electronic particle counter and sizer. Leukocyte differentials and phase contrast platelet counts are done concurrently. A battery of clinical tests (including serum creatinine, glucose, amylase, uric acid, and liver function tests) are carried out on a Beckman spectrophotometer with commercially available reagent kits. Serum and urine sodium and potassium measurements are made on a Beck- man Instruments Electrolyte 2 system. Uri- nalysis (dipstick and microscopic), stool exam-