TenonitrozolePentamidineLeishmania donovani: Leishmania donovani is a species of intracellular parasitic protozoan belonging to the genus Leishmania, a group of haemoflagellate kinetoplastids that cause the disease leishmaniasis. It is a human blood parasite responsible for visceral leishmaniasis or kala-azar, the most severe form of leishmaniasis.Protozoan infection: Protozoan infections are parasitic diseases caused by organisms formerly classified in the Kingdom Protozoa. They include organisms classified in Amoebozoa, Excavata, and Chromalveolata.Trypanocidal agent: A trypanocidal agent is an antiprotozoal agent that acts upon trypanosome parasites.Trypanosoma: Trypanosoma is a genus of kinetoplastids (class Kinetoplastida), a monophyletic group of unicellular parasitic flagellate protozoa. The name is derived from the Greek trypano- (borer) and soma (body) because of their corkscrew-like motion.Trypanosoma equiperdum: Τrypanosoma equiperdum is a protozoan parasite that causes Dourine or covering sickness in horses and other animals in the family equidae. Genetic analyses have revealed T.Leishmania infantum: Leishmania infantum is the causative agent of infantile visceral leishmaniasis in the Mediterranean region of the Old World and in Latin America, where it has been called Leishmania chagasi. It is also an unusual cause of cutaneous leishmaniasis, which is normally caused by specific lineages (or zymodemes).