" Garden of Delights (Couple in a transparent egg like globe) " (details from "Garden of Heavenly Delights "), 1500 Hieronimus van Aeken (known as Bosco or Bosch ) (1450 - 1516) El Prado Museum, Madrid, Spain

This composition may remind a physician the structures of the reproductive system of a human female; the vagina (with a mouse), a cervix (open) as the entry point to a balloon like red uterus or matrix with a tube (Fallopian) attached which at the other end will collect a ripe ovocyte or egg containing in a transparent membrane (amniotic like) a pair of fraternal twins.