Table 7.

Comparison of histopathological alterations in rat placenta.

Group	Percent of placental abnormalities
	Decidual necrosis	Cytolysis	Necrosis	Apoptosis	Severe decidual hypoplasia/atrophy
Control	0	0	0	0	0
K250	25	25	0	0	0
K500	50	100a	0	25	0
K750	50	50	25	50	25
Ad libitum control	0	0	0	0	0

K250: khat extract 250 mg/kg; K500: khat extract 500 mg/kg; K750: khat extract 250 mg/kg; results are summarized as percentages of placental abnormalities; ^asignificant difference seen from the ad libitum and pair-fed control groups (p < 0.05), chi-square.