According to Breitbart:
The biomedical scientist—who assisted the Center for Medical Progress (CMP) in its preparation to infiltrate Planned Parenthood and expose its practice of harvesting aborted baby parts for sale to biomedical companies—says she suspects that the “babies in some of these cases were alive until their hearts were cut out” for harvesting.
In an interview with Breitbart News, Dr. Theresa Deisher, a world-renowned scientist in the field of adult stem cell therapies and regenerative medicine, discussed what is involved in harvesting the organs of aborted babies.
“If you read scientific publications, in which they use the fetal material for some indications, particularly, cardio-vascular, or nerve cell research, they discuss the necessity of having tissue in the digesting buffer solution within five minutes for optimal yields,” she explains. “So, within five minutes of death, you would have to have the heart removed, and flushed of all blood, cleaned of any extra tissue that might be there, and the heart put into a liquid with enzymes that would digest the connective tissue and release the muscle cells.”