Scientific Source #59 – Book
Development of the embryo begins at Stage 1 when a sperm fertilizes an oocyte and together they form a zygote”59
59England, M.A., Life Before Birth, 2nd ed., London: Mosby-Wolfe, 1996, p. 31.
Development of the embryo begins at Stage 1 when a sperm fertilizes an oocyte and together they form a zygote”59
59England, M.A., Life Before Birth, 2nd ed., London: Mosby-Wolfe, 1996, p. 31.