Cytotoxicity of some Cameroonian spices and selected medicinal plant extracts

Effects of selected plant extracts (at 20 μg/ml) on the growth of blood capillaries on the chorioallantoic membrane of quail eggs. (A) DMSO (control): normal growth of blood capillaries on the CAM - no antiangiogenic effect; (B) Xylopia aethiopica; (C) Dorstenia psilirus; (D) Echinops giganteus; (E) Zinziber officinale. Extracts from D. psilirus and E. giganteus significantly inhibited angiogenesis in quail embryo.