. Microorganismi patogeni, compresi batteri e protozoi; un manuale pratico per studenti, medici e operatori sanitari; y HIM dum-dum febbre, che si verificano in India. Li considerava come dei trypano-somes, ma non li chiamava. Più tardi nello stesso anno Donovan ha descritto corpi simili in casi di quella che chiamava cachessia malarica. I corpi DI 55-4 PA THOGEXIC MICRO-ORGA XISMS. Sono stati chiamati prima i corpi di Leishman-Donovan, poi Laveranand Mesnil che ha esaminato le preparazioni di Donovans e consideredthe organismi simili a quelli che causano la febbre del Texas nel bestiame, chiamato themPiroplasma Donovani.

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. Pathogenic micro-organisms, including bacteria and Protozoa; a practical manual for students, physicians and health officers. y him dum-dum fever, occurring in India. He considered them as possibly trypano-somes, but did not name them. Later in the same year Donovan de-scribed similar bodies in cases of what he called malarial cachexia. The 55-4 PA THOGEXIC MICRO-ORGA XISMS. bodies were first called the Leishman-Donovan bodies, then Laveranand Mesnil who examined Donovans preparations and consideredthe organisms similar to those causing Texas fever in cattle, called themPiroplasma Donovani. Ross, however, thought they constituted a dis-tinct fifenus and named {hemLeishmania donovani, bv which name thevare still known. But there is little doubt, through the work of Rogersand of Patton, of their belonging to the genus Herpetomonas. Theyhave since been found in different parts of India, in China, Tunis, Algiers, Arabia, and Egypt, and Wright in this country has reportedin a case of Delhi boil from an Armenian immigrant, bodies which, according to his excellent photographs and description, must be identi- FiG. 172. Protozoa in a case of tropical ulcer. Smear preparation from the lesion stained with ^^rightsRomanowsky blood-staining fluid. The ring-Uke bodies with white central portions and contain-ing a larger and a smaller dark mass are the microorganisms. The dark naasses in the bodies arestained a lilac color, while the peripheral portions of the bodies in typical instances are stained apale robins-egg blue. The very large dark masses are nuclei of cells of the lesion. X 1500 approxi-mately. (After Wright.) I cal with, or very closely related to, Leishmans bodies. On accountof the different pathologic conditions in which they are found, theyare considered by some a different species, Herpetomonas tropica, Wright. The form found in infantile splenomegaly may be consid-ered another species, with the name Herpefomcnas infantile, untW furtherstudy. Darling has recently de

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• bookcentury1900
• bookdecade1910
• bookpublishernewyo
• bookyear1910