Page:Tropical Diseases.djvu/221

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TRYPANOSOMA CRUZI
189

the body. There may be indications of meningoencephalitis. These symptoms come and go during a variable period, and terminate either in death, or in recovery, or in the chronic form lasting for years.

Fig. 51.—Trypanosoina cruzi. (After Chagas.)

Figs. 1-6.—Forms in human blood:
1, 2, Supposed endocorpuscular forms; 3, 4, trypanosomes adhering to red cells; 5, 6, so-called male and female forms.
7 and 8.—Schizogony in the endothelial cells of pulmonary vessels in man:
(Diagrammatic representation of the pulmonary cycle, cyst formation and liberation of young trypanosomes. It is doubtful whether ♂ and ♀ cycles as described by Chapras really exist.)
9-14.—Forms found in Lamus megistus:
9 and 10, Forms from midgut showing development of flagellum; 10 and 11, forms from the hindgut; 12, simultaneous division of nucleus and centrosome; 13 and 14, forms from salivary gland, under a lower magnification.