leishmania: flagellate protozoan that causes leishmaniasis
flagellate: a usually nonphotosynthetic free-living protozoan with whiplike appendages; some are pathogens of humans and other animals
paper chase: an outdoor game; one group of players (the hares) start off on a long run scattering bits of paper (the scent) and pursuers (the hounds) try to catch them before they reach a designated spot