Robertson John A
Kennedy Inst Ethics J. 1991 Dec;1(4):293-302. doi: 10.1353/ken.0.0123.
If preembryos are not persons, as Professor Richard A. McCormick recently argued in an article in this journal, then a variety of actions with preembryos should be permitted to follow. These actions include discard, freezing, research, and preimplantation genetic analysis.