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Ultrastructural localization of basic proteins in Trypanosoma cruzi

T Souto-Padron and W De Souza

The postformalin ammoniacal silver (AS) and the ethanolic phosphotungstic acid (EPTA) techniques were applied in epimastigote and trypomastigote forms of the pathogenic protozoa Trypanosoma cruzi to detect basic proteins at the ultrastructural level. With both techniques, reaction was observed in the nucleus and in some cytoplasmic vacuoles. In the kinetoplast of epimastigotes, reaction was observed only at its periphery. In trypomastigotes, however, an intense reaction was observed in the spherical kinetoplast. With the ethanolic phosphotungstic acid technique, reaction was also observed in ribosomes and at the peripheral doublet microtubules of the flagellum. The filaments which form the paraflagellar structure did not react.

Volume 26, Issue 5, pp. 349-358, 05/01/1978
Copyright © 1978 by The Histochemical Society


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