EGF and ovarian cancer: As shown in Figure 1, in CAOV3 ovarian cancer cell lines, extracellular EGF caused a significant rise in the PAF released from 0.5 ng/ml to 100 ng/ml; while in SKOV3 ovarian cancer cell lines, ext racellular EGF caused a significant rise in the PAF release from 1 ng/ml to 100 ng/ml.