Through Jounouchi Hiromi's explanation, Chen Yu finally understood the course of events and developed a keen interest in her idea of employing a spell like Flesh Z Palace to replace the mother's womb for the gestation period to nurture the fetus.
Such ideas of an artificial Z Palace and extra-uterine pregnancy are not without precedent. In April 2017, a research team led by Annan Freck at the Children's Hospital of Philadelphia, USA, published an article in Nature Communications announcing that their "artificial womb" had successfully passed animal testing.
The researchers created a polyethylene membrane bag filled with artificial amniotic fluid (warm water containing salts and other electrolytes) to simulate a sheep's Z Palace, connecting oxygen through an umbilical cord interface to form a closed fluidic artificial environment. Outside the polyethylene bag, they fitted a machine placenta whose "vessels" were connected to the umbilical cord of the premature lambs.
