Ultrastructural Analysis of Leishmania infantum chagasi Promastigotes Forms Treated In Vitro with Usnic Acid

Figure 2

Scanning electron micrographs of Leishmania infantum chagasi promastigotes exposed to usnic acid. (a) Control group (no treatment); (b, c, d, e, and f) treated group usnic acid at a concentration of 25 μg/mL for 72 hours. Blebs on the surface of promastigotes (thin arrows), membrane rupture (full arrow), swelling (asterisk), and the formation pore (arrowhead). Bars: 1 μm (a, d); 2 μm (c, e and f). Magnifications: (a) 11.000x, (b) 5.000x, (c) 8.000x, (d) 13.000x, (e) 5.500x, and (f) 8.500x.

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