highly significantp < 0.001
The naphtoquinone significantly ( p < 0.05) diminished the protozoan proliferation at 20 μM and the inhibition was highly significant ( p < 0.001) at 30–50 μM, producing 19 μM IC 50 . 3.2 Cytotoxicity In order to test its possible selectivity, the compound was assayed on mammalian cells.