I'd be interested in hearing any credible science that suggests that an unborn is anything other than a human being at any point of development
Black's Law Dictionary 9th edition, Person: A human being.
Nealis v. Baird, 996 P.2d 438, 453 (Okla. 1999) “Contemporary scientific precepts accept as a given that a human life begins at conception.” (citing KEITH L. MOORE & T.V.N. PERSAUD, THE DEVELOPING HUMAN 14 (5th ed. 1993); SUSAN TUCKER BLACKBURN & DONNA LEE LOPER, MATERNAL, FETAL AND NEONATAL PHYSIOLOGY: A CLINICAL PERSPECTIVE 49 (1992); MICHAEL R. HARRISON ET AL., THE UNBORN PATIENT: PRENATAL DIAGNOSIS AND TREATMENT 14 (1984); DALE RUSSELL DUNNIHOO, M.D., PH.D., FUNDAMENTALS OF GYNECOLOGY AND OBSTETRICS 286–99 (1990)
"an unborn child is a human being from conception is “supported by standard textbooks on embryology or human biology”
T.W. SADLER, LANGMAN’S MEDICAL EMBRYOLOGY (John N. Gardner ed., 6th ed. 1990.
"The exact moment of the beginning of personhood and of the human body is at the moment of conception."
M. Allen et. al., "The Limits of Viability." New England Journal of Medicine. 11/25/93: Vol. 329, No. 22, p. 1597.
"Physicians, biologists, and other scientists agree that conception marks the beginning of the life of a human being—a being that is alive and is a member of the human species. There is overwhelming agreement on this point in countless medical, biological, and scientific writings." John C. Fletcher, Mark I. Evans, "Maternal Bonding in Early Fetal Ultrasound Examinations," New England Journal of Medicine, February 17, 1983.
"Not only is it a life, but, by its intrinsic biological nature, it is a human life from the moment of conception, for “it can be nothing else.”
E. BLECHSCHMIDT, THE BEGINNING OF HUMAN LIFE,]16–17
" A zygote is the beginning of a new human being. Human development begins at fertilization, the process during which a male gamete or sperm ... unites with a female gamete or oocyte ... to form a single cell called a zygote. This highly specialized, totipotent cell marks the beginning of each of us as a unique individual." Keith L. Moore, Ph.D. & T.V.N. Persaud, Md., The Developing Human: Clinically Oriented Embryology, 6th ed.(Philadelphia: W.B. Saunders Company, 1998), 2-18.
T.W. SADLER, LANGMAN’S MEDICAL EMBRYOLOGY (John N. Gardner ed., 6th ed. (1990): "the proposition that an unborn child is a human being from conception is “supported by standard textbooks on embryology or human biology"
(“Contemporary scientific precepts accept as a given that a human being's life begins at conception.”
KEITH L. MOORE & T.V.N. PERSAUD, THE DEVELOPING HUMAN 14 (5th ed. 1993)
SUSAN TUCKER BLACKBURN & DONNA LEE LOPER, MATERNAL, FETAL AND NEONATAL PHYSIOLOGY: A CLINICAL PERSPECTIVE 49 (1992)
MICHAEL R. HARRISON ET AL., THE UNBORN PATIENT: PRENATAL DIAGNOSIS AND TREATMENT 14 (1984)
DALE RUSSELL DUNNIHOO, M.D., PH.D., FUNDAMENTALS OF GYNECOLOGY AND OBSTETRICS 286–99 (1990)
Ronan R. O'Rahilly, Fabiola Muller, HUMAN EMBRYOLOGY & TERATOLOGY , (New York: Wiley-Liss, 1996), 5-55. "Fertilization is an important landmark because, under ordinary circumstances, a new, genetically distinct human being is thereby formed"
E.L. Potter and J.M. Craig, PATHOLOGY OF THE FETUS AND THE INFANT, 3d ed. (Chicago: Year Book Medical Publishers, 1975), vii. "Every time a sperm cell and ovum unite a new human being is created which is alive and will continue to live unless its death is brought about by some specific condition."
M. Allen et. al., "The Limits of Viability." New England Journal of Medicine. 11/25/93: Vol. 329, No. 22, p. 1597 "The exact moment of the beginning of personhood and of the human body is at the moment of conception."
John C. Fletcher, Mark I. Evans, "Maternal Bonding in Early Fetal Ultrasound Examinations," New England Journal of Medicine, February 17, 1983."Physicians, biologists, and other scientists agree that conception marks the beginning of the life of a human being—a being that is alive and is a member of the human species. There is overwhelming agreement on this point in countless medical, biological, and scientific writings."
E. BLECHSCHMIDT, THE BEGINNING OF HUMAN LIFE 16–17 (1977) "Not only is it a life, but, “by its intrinsic biological nature,” it is a human life from the moment of conception, for “it can be nothing else."
Carlson, Bruce M. Patten, Foundations of Embryology. 6th edition. (New York: McGraw-Hill, 1996, p. 3); "Almost all higher animals start their lives from a single cell, the fertilized ovum (zygote)... The time of fertilization represents the starting point in the life history, or ontogeny, as an individual member of that species."
Keith L. Moore and T.V.N. Persaud, The developing Human 6th ed 2;" :Zygote: this cell results from the union of an oocyte and a sperm. A zygote is the beginning of a new human being (i.e., an embryo). "
Keith L. Moore, Ph.D. & T.V.N. Persaud, Md., (Philadelphia: W.B. Saunders Company, 1998), 2-18.The Developing Human: Clinically Oriented Embryology, 6th ed. "[The Zygote] results from the union of an oocyte and a sperm. A zygote marks the beginning of a new human being. Human development begins at fertilization, the process during which a male gamete or sperm ... unites with a female gamete or oocyte ... to form a single cell called a zygote. This highly specialized, totipotent cell marks the beginning of each of us as a unique individual."
Ronan R. O'Rahilly, Fabiola Muller, (New York: Wiley-Liss, 1996), 5-55. Human Embryology & Teratology "Fertilization is an important landmark because, under ordinary circumstances, a new, genetically distinct human being is thereby formed... The zygote ... is a unicellular human being... "The ill-defined and inaccurate term pre-embryo, which includes the embryonic disc is not used in this book."