(46 days post-exposure) PLATE 27.—(X100, H&E) (Case #39) Narrow rugose epidermis with papillary extensions downward of stratum malpighit. Latter are heavily laden with melanotic pigment. Slight telangiectasis of pars papillaris and pars reticularis of dermis. Occasional pigment laden chromatophores in superficial dermis. PLATE 28.—(X100, (Case #39) Six months post-exrposure. Moderate focal atrophy of stratum corneum. Paranuclear halos are present and areas of depigmentation are prominent. In the dermis a mod- turbance of keratinization and moderate telangiectasis erate are also seen. OTti H&E) post-exposure. Note the marked diffuse atrophy of the stratum granulosum accompanied by narrow downward prolongations of the basal papillae. Moderate dis- uniformly distributed telangiectasis 1s seen. There is also a perivascular distribution of cellular infiltrate.