Two bioscience companies have reached a $7.785-million settlement with the Orange County district attorney’s office over allegations that they illegally sold fetal tissue to companies around the world, prosecutors said Friday.

According to the settlement signed Monday, DV Biologics LLC and sister company DaVinci Biosciences LLC, both based in Yorba Linda, must cease all operations in California within 60 to 120 days. The agreement also requires the companies to admit liability for violations of state and federal laws prohibiting the sale or purchase of fetal tissue for research purposes, prosecutors said.