1. Leishmania parasites in culture and in a tissue section.
Leishmania parasites in culture and in a tissue section. (A) Leishmania amazonensis promastigote from culture with a visible kinetoplast. (Photo by Pedro Martinez.) (B) Zoonotic visceral leishmaniasis in canine spleen. The spleen was enlarged and infiltrated by large numbers of foamy macrophages containing numerous intracellular Leishmania infantum amastigotes (arrows), confirmed by immunohistochemistry (magnification, ×100).
Kevin J. Esch, and Christine A. Petersen Clin. Microbiol. Rev. 2013; doi: /CMR