Modified form of in vitro fertilization in which the fertilized ovum is reintroduced into the mother's Fallopian tube before the ovum has undergone its first cell division. This mimics the natural processes of fertilization (which normally occurs in the Fallopian tube) and implantation more effectively than older techniques.
The Pillars of Hercules represent the promontories of Gibraltar and Ceuta. The shield represents the regions of Castile, Léon, Aragón, Navarre, and Granada. Effective date: 18 December 1981.