Scanning electron microscopy of Leishmania amazonensis promastigotes. The figure shows control promastigotes (A) and promastigotes treated with concentrations that corresponded to the IC50
(B-D) and IC90
(E,F) of BZTS. (A) The protozoan presented typical characteristics, with an elongated shape and free flagellum. (B-F) BZTS induced alterations in the shape and size of the protozoan. Scale bar = 1 μm.