Table 3. Cytotoxicity of the extracts of F. deltoidea leaves against WRL68 cells.

Sample	Extract/fraction	Incubation
		24 hr (IC50 - µg/ml)	48 hr (IC50 - µg/ml)	72 hr (IC50 - µg/ml)
FDS	Crude	N/D	N/D	N/D
	Water fraction	N/D	N/D	N/D
	Ethyl acetate fraction	N/D	N/D	N/D
FDM	Crude	N/D	N/D	N/D
	Water fraction	N/D	N/D	N/D
	Ethyl acetate fraction	N/D	N/D	N/D
FDB	Crude	N/D	N/D	347.67 ± 2.52
	Water fraction	378.3 ± 5.51	306.7 ± 7.37	224 ± 21.17
	Ethyl acetate fraction	N/D	N/D	N/D

Notes.

The experiment was conducted in a 96-well plate, each in triplicate. Cells were allowed to attach for 24 h after seeding. WRL68 cells were treated with various concentrations of the extracts of F.deltoidea crude extracts and fractions for 24, 48 and 72 h.

Results were expressed as means ± S.D. (n = 3).

IC₅₀ = concentration of plant extracts (μ g/ml) that inhibited 50% of the cells.

N/D, no inhibition detected