Embryologists Dianne Irving, Ph.D, a former bench research biochemist with the National Institutes of Health and a Professor of Medical Ethics at Georgetown University, and Ward Kischer, Ph.D., Professor emeritus of Cell Biology and Anatomy specializing in embryology at the University Arizona, cite what they call "the number-one human embryology textbook," Human Embryology & Teratology published by Wiley-Liss: "The heart begins to beat by 4 weeks."
~From Live Action: Read doctors' rejection of Planned Parenthood's medical lies here. ~
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