Archive image from page 417 of The pathology and differential diagnosis The pathology and differential diagnosis of infectious diseases of animals differentpathology00moorrich Year: 1908 392 TRYPANOSOMA § 305. General morphology of trypanosoma, Try- panosoma of all species are in general very similar. The mor- phology is said to vary greatly in the same species and to a greater extent in different species. In general the trypanosoma may be said to measure from i to 5 /i in thickness and from 15 to 45 /< in length, including flagellum. They all show very active eel-like movements and some
Archive image from page 417 of The pathology and differential diagnosis The pathology and differential diagnosis of infectious diseases of animals differentpathology00moorrich Year: 1908 392 TRYPANOSOMA § 305. General morphology of trypanosoma, Try- panosoma of all species are in general very similar. The mor- phology is said to vary greatly in the same species and to a greater extent in different species. In general the trypanosoma may be said to measure from i to 5 /i in thickness and from 15 to 45 /< in length, including flagellum. They all show very active eel-like movements and some motility. The nature and extent of the motility varies. The fact as stated, that variations are occasionally found in one species, often, indeed, in a single preparation, which are nearly as great as those observed between dif- ferent species, renders the specific determination dififi- cult. The flagellum at the anterior end of the parasite varies in length. It is actively motile, pointed and continuous, with the thickened margin of the undulating membrane end- ing at or near the centre- some. The undulating membrane extends along the border of the organism from near the ceutrosome in the posterior portion to the anterior end of the organism, from whence it continues as the free flagellum. Its breadth and folds vary considerably. The nucleus is usualh' situated in the anterior half of the parasite and varies both in size and shape. It is generally oval or round, and assumes other contours with the different stages of division. The centrosomeas a rule is in the posterior and more blunt end, and it appears to have an intimate associ- FiG. 103. Trypan- osoma Briicei: c, centrosome; f, flagellum ; m,un- dulating mem- brane; n,nucleus. X about 2,000. {After Laveran and Mesnil). Fig. 104. Trypan- oplasma Borrelli : ccentrosome ; fa, anterior flagel- lu in; fp ,posterio r flag ell u ni; m ,un- dulating mem,- hrane; n,nucleus; X about 1,800. {After Laveran and Mesnil).
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