Ay» TEE eg S ‘ > Pt Ant oe “s .he : SP ng ol estEh . saa Boe, . spar ’ a . ‘ ?. meee # tat roe Bost * ° gs, * . rr. 7” Wee . Be ok <4 Explanation of Plates Plate 1. Residual “beta burn” on abdominal wall of Case K-5 in 1964. Plate 2. Section of skin from “beta burn” area shown in Plate | (100 x). Plate 3. Section of skin from “beta burn” area of abnominal wall of Case K-12 in 1964 (100 x ). Plate 4. Section of skin from non-exposed area of abdominal] wall of Case K-12 in 1964 eh 00x). - mo * Compared with Plate 4, Plate 2 and 3 reveal atrophy of epidermis with narrowed stratum granulosum and elongation of rete pegs. Fibrosis and collapsed #*- blood capillaries are seen subepidermally. A metaphase from Case K-4. nN A dicentric chromosomeis observed. Plate 6. karyotype from CaseK-16. It reveals an unusual acrocentric Chromosome. 3 -.a: " a ‘ ¥¥ ’ he é 4 ‘ ' ‘ - és vag inf ote wea yt pO Ee RE ane yt SMR meea me