What is the creation of a baby?

Over the next few days, the single cell divides into multiple cells. At the same time, the small cluster of dividing cells moves through the fallopian tube to the lining of the uterus. There it implants and starts to grow. For 8 weeks after implantation, it is called an embryo.

Blood transfusions were rarely done and often fatal; they were outlawed until the nineteenth century.