Report of first expedition to South America, 1913 . mw^^W^ ??^•«^i^-^:^ ... V~ ?^,:. ? O v^!^^^$ •/?• ?i#S •^- •,*ti ,» -.: i- Fig. 1. — Liver. Stained with Scharlach Roth. Showing areas of central Fio. 2. — LivKrt. Showing area of Iatty dogciicration of hver cells and phagocytosis. Plate XIII.—Ohoya Fkvkk. HISTOLOGICAL STUDIES 49 HiSTOPATHOLOGY We have also been unable to find any accurate report of thehistological changes occurring in Oroya fever, or indeed anj-account of the specific lesions we have observed in the micro-scopical study of the tissues of individua
Report of first expedition to South America, 1913 . mw^^W^ ??^•«^i^-^:^ ... V~ ?^,:. ? O v^!^^^$ •/?• ?i#S •^- •,*ti ,» -.: i- Fig. 1. — Liver. Stained with Scharlach Roth. Showing areas of central Fio. 2. — LivKrt. Showing area of Iatty dogciicration of hver cells and phagocytosis. Plate XIII.—Ohoya Fkvkk. HISTOLOGICAL STUDIES 49 HiSTOPATHOLOGY We have also been unable to find any accurate report of thehistological changes occurring in Oroya fever, or indeed anj-account of the specific lesions we have observed in the micro-scopical study of the tissues of individuals dying from thisdisease. Nevertheless, in tissues presented to us in Lima fromOroya fever cases (designated as verruga cases in which therewas no eruption upon the skin), we have sometimes found thesame lesions we have observed in the tissues collected atnecropsy by ourselves. The tendency, by many Peruvianphj^sicians at least, has been to regard the case coming tonecropsy with no lesions of verruga either upon the skin orinternally, as one of mistaken diagnosis or as one of verrugaperuviana in which death has occurred before the nodularlesions have appeared. The interest in Peru has appearedalmost al
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