Table 1.

IC₅₀ values of different formulations toward KU812 leukaemia cells as measured with MTT assay.

Sample	IC50 IM (nM)	IC50 Nil (nM)
Free IM	150 nM	-
Free Nil	-	30 nM
Free IM/Nil combination	130 nM	28 nM
IM released from PCL NPs	70 nM	-
Nil released from PCL NPs	-	18 nM
IM/Nil released from PCL NPs	50 nM	15 nM