CONTENTS SomeStudies of Immunological Aspects of Aging and Fallout Radiation Exposure... . Materials and Methods... 0. 31 . . 31 tee SL Serum Proteins...000000.0 00 cc oe et teeettet ce cee ete cites ceteetteegnsereerenee evens 32 Serum Immunoglobulins......000 000000000 ee tt te tee 32 vee ceeeceeeneeseee ceenees sesenetatee te vaneeesees 32 Lymphocyte Cultures. .......0.0.0.00000 eee Peripheral Blood Elements..............0..0... . Statistical Analysis of Data... 2... vee ete eee vette teeees beets . 32 Results... 00 ec. ec eee cee cectee ceveeneteesene cates ceeseessteneaeseseees Scie tnt cee 32 Response of Lymphocytes to Phytohemagglutinin Stumulation.... 000000000000 33 Peripheral Blood Elements... 000000000 ccc cee ce cee ceeee ceeeeeee cuscteeeeeesecettn cette es 33 Serum Protein Patterms......00..0.0cccccccccccceseeeeeeeesececeeeeetee sotetcssteeeteteccuecisatutstscecesetesnenee 33 Discussion... cece cee eee cceeecnenseenens cesses cet cones ceesesens ceeneeacecnecatsesteetetetee ceeteteeseees 37 Estimation of Internal Body Burdens of Radionuclides in Marshallese 2.0.0.0 00.0... . 39 Hematological Findings....0.000.00..00000c cece cee cece dete terete e cue reese eaeeseteenteanereeres 40 SUMMARY OF FINDINGS IN RONGELAP PEOPLE OVER THE Past 15 YEARS.......0.006000 eee 43 Prodromal Radiation Effects.....0.0..00 ccc cesses cree cee eeeet ieee terstesnite eaveetennten ree ce 43 Acute Effects....0.00..000000.08: ce ecceeeceseceeeeuesteneeste cotseecnte Geese aeeeeeetagees Gavete seceesneeentneveneess 43 Penetrating Radiation... ccc cee cceeteeeeeeseeencecreeenenee cosets nvntetsetenentte ueesee css 43 Beta Irradiation of the Skim... cece cee cece cates esecaeataeeeeeesecesnevteessteeeas 44 Internal Irradiation... ccc ce ceeeeescceeeceee coe eees seseaeaecenseeesecessaseeeesnsestee cageeeseesenres tae 44 Late Effects... ccc eee cneeeeeeecseeee cise eeeseeeccesers cena setsseneneaseieasesnecisenescensnenesiteteneeeney 45 General Healthe.....oc ec ceecc ee ee ee ceeeee rene tenes tees eeessesesseeteeneeseseneneueesetetersneneeincees 45 Mortality... ieee ieee tienen netleeveesesee seeneteeeeaenene tise eeaetteees 45 Fertility... cece ceeeecce cece eens enenceneceeceenecnteetie ete cesaneeeseceveeceaven seeseveveeneseeneneneceteaees 45 Miscarriages, Stillbirths, Genetic Effects...00..0 0000 cece ceeeeeececeeeecteete ceeeeeeteenenes 45