Figure 4From: Invasiveness of mouse embryos to human ovarian cancer cells HO8910PM and the role of MMP-9Images of experiment group. (a) At 24 h the mouse blastocyst adhered; (b) At 48 h embryonic trophoblast cells began to expand; (c) At 72 h tumor cells were pushed away by the growth of embryos ; (d) At 120 h the expansion area of trophoblast cells stopped enlarging (100 ×).Back to article page