A whistleblower describes extracting brain tissue from a fetus whose heart was still beating, in a seventh undercover video targeting Planned Parenthood that was released Wednesday morning.

Holly O’Donnell used to help collect aborted fetal tissue from Planned Parenthood clinics as a former lab technician for the California-based biomedical company Stem Express. She appears in past footage released by anti-abortion investigator David Daleiden, and in the latest video, she says she was asked by a colleague named “Jessica” to handle an aborted fetus whose heart was still beating.

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