28 cases with 7th nerve weakness involvingthelids; two cases of anisocoria (unequal pupils); and an increased incidenceof strabismus. since that time (see Figure 21). Histological study of a biopsy of one of these lesions showed it to be Residual “Beta Burns” shallese who had sustainédagute “beta Persisting residual effects of “beta burns” were found to be present in 19 people, 6 children and 13 adults. These are outlined in Table 17. The skin changes consisted of hyperkeratosis, and varying degrees of atrophy, scatring, and pigment aberrations (see Figures 19 and 26}. Fhese changes wereslight in most of the people. The devaop- _ a typical benign pigmented nevus. The residuai changes in'the skin of the Mar- titisnor evidenceoftalignant change. Onlyone me a fewtpats of alopecia of the occipital area ofthe scalp as a residuum ofepilation. Figure 22°ellows histological residual changes in a lesion Et fr after exposure.* ment of lentigo-like and papular pigmented=~ nevus-like lesions in areas of previous “‘beta burng”.. : Surns”’ have shown neither fissure tissue breakdown in the affected areas as se in cBfonic radiatien derma- was first observed several years ago, and thes, *.:. va? LABORATORY EXAMINATIONS lesions appear to have been increasing slightly = * - ical . s..”Summary tables of hematological! data are preFigure 22. Section ofskin from “beta burn”’ area on back of neck of 56-year-old woman (No. 34) at 10 years after exposure (100x ). Note atrophy of epidermis with narrowing of stratum granulosum and finger-like projections of rete pegs. Slight atrophyof the sweat gland ducts is also present. 4jented in the tables and graphs in the text, and raw data onthe individuals are presented in the appendices. The more heavily exposed Rongelap *Dr. David A. Wood of the Universicy of California Medical Center, San Francisco, did the histological interpretations.