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Service, not Servitude

Service, not Servitude

Scientific and Philosophical Expertise: An Evaluation of the Arguments on "Personhood"

Linacre Quarterly February 1993, 60:1:18-46
[Edited, September 20, 1996]
(Reproduced with Permission)


Notes

1. See Etienne Gilson, Being and Some Philosophers (Toronto: Pontifical Institute of Mediaeval Studies, 1949); also, Frederick Copleston, A History of Philosophy (New York: Image Books, 1962).

2. See Dianne Nutwell Irving, Philosophical and Scientific Analysis of the Nature of the Early Human Embryo (Doctoral dissertation: Washington, D.C., Department of Philosophy, Georgetown University, April 1991), pp. 267-273 (includes charts of 26 of the arguments).

3. Fr. Tom Daly, "When does a human life begin? The search for a marker event", in Karen Dawson and Jill Hudson (eds.), Proceedings of the Conference: IVF: The Current Debate (Clayton, Victoria, Australia: Monash Center for Human Bioethics, 1987), 79.

4. Irving, Philosophical and Scientific Analysis of the Nature of the Early Human Embryo (1991), particularly Chap. 5..

In addition to the writers I have referenced infra, for an non-exhaustive list of other writers who basically argue similarly with the scientific and/or philosophical critiques presented here include (see also Note 15): [arranged in "rough" categories, as there is usually substantial over-lapping]

Science: C. Ward Kischer, "A new-wave dialectic: The reinvention of human embryology", Linacre Quarterly (1994), 61:66-81; C. Ward Kischer, "In defense of human development", Linacre Quarterly (1992), 59:68-75; P. McCullagh, The Foetus As Transplant Donor: Scientific, Social and Ethical Perspectives (New York: John Wiley & Sons, 1987), 483-502; E.F. Diamond, "Abortion? NO!", Insight (Feb. 1972) 36-41.

Philosophy: W. Quinn, "Abortion: identity and loss", Philosophy and Public Affairs 13 (1984): 24-54; B. Brody, "On the humanity of the fetus", in Tom Beauchamp and LeRoy Walters, (eds.), Contemporary Issues in Bioethics (California: Wadsworth, 1978), 229-240; R. Werner, "Abortion: the moral status of the unknown", in Social Theory and Practice, 3 (1974): 202; R. Wertheimer, "Understanding the abortion argument", Philosophy and Public Affairs (1971), 1:67-95.

Science/Philosophy: Laura Palazzani, "The nature of the human embryo: philosophical perspectives", Ethics and Medicine (1996), 12:1:14-17; C. Ward Kischer and D.N. Irving, The Human Development Hoax: Time To Tell The Truth (Clinton Township, MI: Gold Leaf Press,1995), pre-marketing edition; Antonio Puca, "Ten years on from the Warnock Report: Is the human embryo a 'person'?", Linacre Quarterly (May 1995), 62:2:75-87; Agneta Sutton, "Ten years after the Warnock Report: Is the human neo-conceptus a person?", Linacre Quarterly (May 1995), 62:2:63-74; A. Zimmerman, "I began at the beginning", Linacre Quarterly (1993), 60:86-92; A.A. Howsepian, "Who or what are we?", Review of Metaphysics (March 1992), 45:483-502; S. Heaney, "Aquinas and the presence of the human rational soul in the early human embryo", The Thomist (Jan. 1992), 56:1:19-48; Anthony Fisher, "Individuogenesis and a recent book by Fr. Ford", Anthropotes (1991), 2:199ff; Stephen Schwarz, The Moral Question of Abortion (Chicago: Loyola University Press, 1990), esp. Chapters 6 and 7; S. Schwarz and R.K. Tacelli, "Abortion and some philosophers: A critical examination", Public Policy Quarterly (1989), 3:81-98; T. Iglesias, "In vitro fertilization: The major issues", Journal of Medical Ethics 10 (1984): 32-37; J. Santamaria, "In vitro fertilization and embryo transfer", in M.N. Brumsky, (ed.), Proceedings of the Conference: In Vitro Fertilization: Problems and Possibilities (Clayton, Victoria: Monash Center for Human Bioethics, Clayton, Vic., 1982), 48-53.

Science/Philosophy/Theology: Mark Johnson, "Quaestio Disputata: Delayed Hominization; Reflections on some recent Catholic claims for delayed hominization", Theological Studies (1995), 56:743-763; B. Ashley and A. Moraczewski, "Is the biological subject of human rights present from conception?", in P. Cataldo and A. Moraczewski, The Fetal Tissue Issue: Medical and Ethical Aspects (Braintree, MA: The Pope John Center (1994), Chapter Three; B. Ashley and K. O'Rourke, Ethics of Health Care (2nd ed.)(Washington, D.C.: Georgetown University Press, 1994), pp. 149-151; B. Ashley, "Delayed hominization: Catholic theological perspectives", in R.E. Smith (ed.), The Interaction of Catholic Bioethics and Secular Society (Braintree, MA: The Pope John Center, 1992), esp. pp. 165, 176; A. Regan, "The human conceptus and personhood", Studia Moralis (1992), 30:97-127; W.E. May, "Zygotes, embryos and persons", Ethics and Medics, Part I (Oct. 1991), 16:10; G. Grisez, "When do people begin?", Proceedings of the American Catholic Philosophical Association (1990), 63:27-47; T.J. O'Donnell, "A traditional Catholic's view", in P.B. Jung and T. Shannon, Abortion & Catholicism (New York: Crossroad Publishing Co., 1988), pp. 44-47; Benedict Ashley and Kevin O'Rourke, Health Care Ethics: A Theological Analysis (St. Louis: Catholic Health Association, 1987, 2nd ed.), pp. 2-6, 218-233; Jean de Siebenthal, "L'animation selon Thomas d'Aquin: Peut-on affirmer qui l'embryon est d'abord autre chose qu'un homme en s'appuyant sur Thomas d'Aquin?", in L'Embryon: Un Homme. Actes du Congres de Lausanne 1986 (Lausanne: Societe suisse de bioethique, 1986, 91-98); M.A. Taylor, Human Generation in the Thought of Thomas Aquinas: A Case Study on the Role of Biological Fact in Theological Science (Ann Arbor: University Microfilms International, 1982); Benedict Ashley, "A critique of the theory of delayed hominization," in D.G. McCarthy and A.S. Moraczewski, (eds.), An Ethical Evaluation of Fetal Experimentation: An Interdisciplinary Study (St. Louis: Pope John XXIII Medical-Moral Research and Education Center, 1976), 113-133; G.C. Grisez, Abortion: The Myths, the Realities and the Arguments (New York: Corpus Books, 1970).

(Science)/(Philosophy)/Law: D.N. Irving, amicus curiae brief, Alexander Loce vs The State of New Jersey (1994) (No. 93-1149); S. Heaney, "On the legal status of the unborn", The Catholic Lawyer 33:4:305-323; J.J. Carberry and D.W. Kmiec, "How law denies science", Human Life Review (1992), 18:4:105; G.T. Noonan, "An almost absolute value in history", in J.T. Noonan (ed.), The Morality of Abortion (Cambridge, MA: Harvard University Press, 1970), 1-59. On related issues, several recent writers have criticized the legal validity of Roe vs Wade: "Testimony of Douglas W. Kmiec, Professor of Constitutional Law, University of Notre Dame, Straus Distinguished Visiting Professor, Pepperdine University, Before the Subcommittee on the Constitution, Committee of the Judiciary, U.S. House of Representatives" April 22, 1996; "Testimony of Mary Ann Glendon, Learned Hand Professor of Law, Harvard University, Before the Subcommittee on the Constitution, Committee of the Judiciary, U.S. House of Representatives", April 22, 1996; M.A. Glendon, Abortion and Divorce in Western Law: American Failures, European Challenges (Cambridge MA: Harvard University Press, 1987); C. Crandall, "Failed predictions", First Things (June/July 1996), pp. 62ff; C. Forsythe, "The effective enforcement of abortion law before Roe vs Wade", Part V: "Legal Perspectives", in Brad Stetson (ed.), The Silent Subject (Westport, CN: Praeger Publishers, 1996); P. Cunningham and C. Forsythe, "Is abortion the 'first right' for women?: Some consequences of legal abortion", in J.D. Butler and D.F. Walbert, Abortion, Medicine and the Law (4th ed.) (New York: Facts on File, Inc, 1992).

Several well-known documents also argue for personhood at "fertilization": Congregation for the Doctrine of the Faith, "Instruction on Respect for Human Life in its Origin and on the Dignity of Procreation," [Donum vitae] reprinted in L'Osservatore Romano (Vatican City: 16 March 1987), 3; Commonwealth of Australia, Senate Select Committee on the Human Embryo Experimentation Bill 1985, (Official Hansard Report), (Canberra: Commonwealth Government Printer, 1986), 25; Parliamentary Assembly of the Council of Europe, On the use of human embryos and foetuses for diagnostic, therapeutic, scientific, industrial and commercial purposes, Recommendation 1046 (1986), 1; and Davis vs Davis, 641 1 (D. Tenn. 1989).

For a non-exhaustive list of arguments counter fertilization in addition to those infra, see:

Science: H.J. Morowitz and J.S. Trefil, The Facts of Life: Science and the Abortion Controversy (Oxford: Oxford University Press, 1992); Karen Dawson, "Fertilization and moral status: A scientific perspective", in P. Singer, Embryo Experimentation (1990), 43-52.

Science/Philosophy: Stephen Buckle, Karen Dawson and Peter Singer, "The syngamy debate: when precisely does a human life begin?", in Peter Singer et al (eds.), Embryo Experimentation (New York: Cambridge University Press, 1990), 214-215.

Science/Theology: Jean Porter, "Individuality, personal identity, and the moral status of the preembryo: A response to Mark Johnson", Theological Studies (1995), 56:763-770; L. Cahill, "The embryo and the fetus: New moral contexts", Theological Studies (1993), 54:124-42; Shannon and A.B. Wolter, "Reflections on the moral status of the pre-embryo", Theological Studies (1990), 51:603-26; C. Tauer, "The tradition of probabilism and the moral status of the early embryo", in P.B. Jung and T.A. Shannon (eds.), Abortion & Catholicism (New York: The Crossroad Publishing Co., 1988), pp. 54-84; Michael J. Coughlan, "'From the moment of conception...': The Vatican instruction on artificial procreation techniques", Bioethics 2(4), 1988, p. 294-316; Karl Rahner, "The problem of genetic manipulation", in Theological Investigations 9 (New York: Herder and Herder, 1972), p. 226, n. 2; J. Donceel, "Immediate animation and delayed hominization", Theological Studies 31 (1970), p. 75-105.

Science/?: Clifford Grobstein, Science and the Unborn: Choosing Human Futures (New York: Basic Books, 1988); Clifford Grobstein, "A biological perspective on the origin of human life and personhood", in M.W. Shaw and A.E. Doudera (eds.), Defining Human Life (Washington: Association of University Programs in Health Administration, 1983).

British document: Dame Mary Warnock, Report of the Committee of Inquiry into Human Fertilization and Embryology (London: Her Majesty's Stationary Office, 1984), esp. p. 17.

5. Antoine Suarez, "Hydatidiform moles and teratomas confirm the human identity of the preimplantation embryo", Journal of Medicine and Philosophy, 15 (1990): 627-635.

6. Carlos Bedate and Robert Cefalo, "The zygote: to be or not be a person", Journal of Medicine and Philosophy 14 (6), 1989: 641; Richard McCormick, S.J., "Who or what is the preembryo?", paper presented at the Andre E. Hellegers Lecture (Washington, D.C., Georgetown University: May 17, 1990) (pre-publication manuscript); see also Richard McCormick, S.J., "Who or what is the preembryo?", Kennedy Institute of Ethics Journal 1(1), 1991, 1; Norman Ford, "The case against destructive embryo research", in Proceedings of the Conference: IVF: The Current Debate, 90-95; also Ford, When Did I Begin? (New York: Cambridge University Press, 1988); William Wallace, "Nature and human nature as the norm in medical ethics", in Edmund D. Pellegrino, John Langan and John Collins Harvey, (eds.), Catholic Perspectives on Medical Morals (Dordrecht: Kluwer Academic Publishing, 1989), 23-53.

7. D.N. Irving, Philosophical and Scientific Analysis of the Nature of the Early Human Embryo (1991); note 2 supra, pp. 267-273.

8. Thomas J. Bole, III, "Metaphysical accounts of the zygote as a person and the veto power of facts", Journal of Medicine and Philosophy 14 (1989): 647-653; also, "Zygotes, souls, substances, and persons", Journal of Medicine and Philosophy 15 (1990): 637-652.

9. Singer and Wells, in D. Gareth Jones, "Brain birth and personal identity", Journal of Medical Ethics 15 (1989): 175.

10. Michael Lockwood, "When does life begin?", in Michael Lockwood, (ed.), Moral Dilemmas in Modern Medicine (New York: Oxford University Press, 1985), 10; also Lockwood, "Warnock versus Powell (and Harradine): When does potentiality count?", Bioethics 2 (3), 1988: 187-213.

11. M.C. Shea, "Embryonic life and human life", Journal of Medical Ethics 11 (1985): 205-209.

12. R.M. Hare, "When does potentiality count? A comment on Lockwood", Bioethics 2 (3), July 1988: 214.

13. H.T. Engelhardt, The Foundations of Bioethics (New York: Oxford University Press, 1985), 111.

14. Peter Singer, "Technology and procreation: How far should we go?", Technology Review (Feb./Mar. 1985).

15. See Dianne N. Irving, "Science, philosophy, theology - and altruism: the chorismos and the zygon", in Hans May, Meinfried Striegnitz, Philip Hefner (eds.), Loccumer Protokolle (Rehburg-Loccum: Evangelische Akademie Loccum, 1996); Etienne Gilson, Being and Some Philosophers (Toronto: Pontifical Institute of Mediaeval Studies, 1949); Frederick Copleston, A History of Philosophy (New York: Image Books, 1962); Leonard J. Eslick, "The material substrate in Plato", in Ernan McMullin (ed.), The Concept of Matter in Greek and Medieval Philosophy (Indiana: University of Notre Dame Press, 1963); Frederick Wilhelmsen, Man's Knowledge of Reality (New Jersey: Prentice-Hall, Inc., 1956), esp. Chaps. 2 and 3.

16. For an excellent explanation of the difference between Boethius' and Aquinas' definitions of a "human being" or "human person", see Kevin Doran, "Person -- a key concept for ethics", Linacre Quarterly 56 (4), 1989, 39.

17. See J. Cottingham, R. Stoothoff, D. Murdoch (trans.), The Philosophical Writings of Descartes (Cambridge: Cambridge University Press, 1989)

18. Aristotle, in his De Coelo (1.5.271b, 9-10), in Richard McKeon (ed.), The Basic Works of Aristotle (New York: Random House, 1941).

19. See Irving, Philosophical and Scientific Analysis... (1991); esp. pp. 83-125, and Chap. 5.

20. Aristotle, Categories, in Sir David Ross, Aristotle (New York: Random House, 1985), p. 20-21; also, Aristotle, Analytica Posteriora 2.19, 100a 3-9, in Richard McKeon (ed.), The Basic Works of Aristotle (New York: Random House, 1941); for Aquinas' similar position, see: The Division and Method of the Sciences, Q6, a.1, reply to 1st Q, pp. 65-66; ibid., Q6, reply to 3rd Q, pp. 71-72; ibid., Q6, a.2, pp. 176-178; ibid., Q6, a.4, p. 90; ibid., Q5, a.3, p.35 (also quoted there in note 21: In I Post. Anal. lect. 1-3, and in De Veritate 1.1); see also George Klubertanz, Introduction to the Philosophy of Being (New York: Appleton-Century-Crofts, 1963), pp. 293-298.

21. Benjamin Lewin (ed.), Genes III (New York: John Wiley and Sons, 1987), pp. 11-13,17-19, 30, 32, 33, 35, 37, 79, 91, 93-94; also Alan E.H. Emery, Elements of Medical Genetics (New York: Churchill Livingstone, 1983), pp. 25, 34, 65, 101-103.

22. Aristotle, Categories 5. 2a, 11-13, (McKeon, 1941), p. 9; also (Ross, 1985), p. 24; also (McKeon, 1941): Metaphysica 7.11.1036b, 3-7, p. 800; 8.1.1042a, 30-31, p. 812; even in his De Anima (McKeon, 1941) Aristotle argues for the composite: 2.1.412b, 6-10, p. 555 and 2.1.413a, 3-4, p. 556; for Thomas Aquinas, see his Summa Theologica, Fathers of the English Dominican Province (trans.) (Westminster, Md.: Christian Classics, 1981, Vol. 1): Ia.q29,a.1,ans., ad2,3,5, p. 156; ibid., a.2, ans., p. 157; see also Kevin Doran, "Person -- a key concept for ethics", Linacre Quarterly 56(4), 1989, p. 39.

23. Aristotle, De Anima (McKeon, 1941): 1.4.408b, 13-15, p. 548; also, 1.4.488b, 25-26, p. 548; for Aquinas see ST Ia.q75, a.2, ad.2, p. 365; also see Frederick Wilhelmsen, Man's Knowledge of Reality (New Jersey: Prentice-Hall, Inc., 1956), pp. 78-79 and 103-105.

24. Keith L. Moore, The Developing Human (Philadelphia: W.B. Saunders Company, 1982, 3rd. ed.), pp. 14ff; also Benjamin Lewin, Genes III (New York: John Wiley and Sons, 1987), pp. 24ff.

25. K. Moore, The Developing Human (Philadelphia: W.B. Saunders Company, 1982), p. 1; W.J. Larsen, Human Embryology (New York: Churchill Livingstone, 1993), p. 1; Bruce M. Carlson, Human Embryology and Developmental Biology (St. Louis, MO: Mosby, 1994), pp. 3,33-34; R. O'Rahilly and F. Muller, Human Embryology and Teratology (New York: Wiley-Liss, 1994), pp. 19, 23.

26. Bruce M. Carlson, Human Embryology and Developmental Biology (St. Louis, MO: Mosby, 1994), p. 31.

27. Aristotle, Physica, (McKeon, 1941): 1.7.191a, 15-18, pp. 232-233; also 2.3.194b, 23-35, pp. 240-241; see also, Henry B. Veatch, Aristotle: A Contemporary Approach (Indiana: Indiana University Press, 1974), Chaps. 2,3; for Aquinas, see George Klubertanz, The Philosophy of Human Nature (New York: Appleton-Century-Crofts, 1963), pp. 124ff; also Klubertanz (Philosophy of Being, 1963), pp. 98-100, 116 (and Thomas Aquinas, Commentary on Aristotle's Metaphysics, Bk. VIII, lect.1, (ed.) Cathala, Nos. 1688-1689, as quoted p. 118).

28. Ibid.

29. See Moore (1982) and Lewin (1987), note 26 supra.

30. Irving, Philosophical and Scientific Analysis (1991), see notes pp. 78-80. There is a rapidly increasing volume of this kind of work, e.g., Kollias, G; Hurst, J; deBoer, E. and Grosveld, F. "The human beta-globulin gene contains a downstream developmental specific enhancer", Nucleic Acids Research 15(14) (July, 1987), 5739-47; R.K. Humphries et al, "Transfer of human and murine globin-gene sequences into transgenic mice", American Journal of Human Genetics 37(2) (1985), 295-310; A. Schnieke et al, "Introduction of the human pro alpha 1 (I) collagen gene into pro alpha 1 (I) - deficient Mov-13 mouse cells leads to formation of functional mouse-human hybrid type I collagen", Proceedings of the National Academy of Science - USA 84(3) (Feb. 1987), pp. 764-8.

31. See note 27 supra.

32. pace R.M. Hare, "When does potentially count? A comment on Lockwood", Bioethics 2(3), 1988.

33. pace Michael Lockwood, "Warnock versus Powell (and Harradine): When does potentiality count?", Bioethics 2(3), 1988.

34. For brevity I will designate Aristotle's theory of substance as a composite, which is the pre-dominant one in his Categories, Physics, the first half of the Metaphysics, and even in many parts of his De Anima, as "Aristotle - proper". Aristotle's theory of substance as form alone -- or as only the "rational" part of the form, and the succession of souls as found predominantly in the second half of his Metaphysics and in parts of the De Anima, contradicts the former theory. (See 150-page Appendix A, "Aristotle: A question of substance", in my dissertation, Philosophical and Scientific Analysis, pp. 296-381). There is also some degree of contradiction in Thomas -- insofar as he sometimes "unblushingly" follows Aristotle's theory of separate form (see, for example, the differences between the definition of a human being and that of a human soul in the De Ente et Essentia in Chapter Two and Chapter Four). Also see note 100 for come contemporary criticisms of Aristotle's inconsistencies on "substance". It is worth noting that for both of them the state of human embryology and chemistry was still rather primitive (e.g., both still held for only 4 physical elements -- air, earth, fire and water).

35. Aristotle, Physica 2.1.193b, 3-5, (McKeon, 1941), p.238.

36. Ibid., 2.2.194b, 12-14, p. 240; see also 2.2.193b, 33-37, p. 239.

37. Aristotle, De Anima 1.5.411b, 14-18, (McKeon, 1941), p. 554.

38. Aristotle, De Anima, 1.5.411b, 24-28, (McKeon, 1941), p.554.

39. Aristotle, Metaphysica, 3.2.997b18-998a10, (McKeon, 1941), p. 721; see also 11.1.1059a34-1059b14. pp. 850-851; for Aquinas, see ST, Ia.q.45, a.4, ad.2, p. 235.

40. Thomas Aquinas, ST, Ia.q29, a.1, ans., ad.2,3,5, p. 156; ibid, a.2, ans., p. 157; also ST, IIIa.q19, a.1, ad.4.2127; see also, Kevin Doran, "Person-a key concept for ethics", Linacre Quarterly 56(4), 1989, p.39.

41. See notes 22 and 40 supra; also Thomas Aquinas, On being and Essence, Armand Maurer (trans.), (Toronto: Pontifical Institute of Mediaeval Studies, 1983), Chap. 2; also The Division and Method of the Sciences, Armand Mauer (trans.), (Toronto: Pontifical Institute of Mediaeval Studies, 1986), p. 14, 29, 39, 40.

42. Thomas Aquinas, ST, IIIa. q19, a.1, ad.4.2127; see also Kevin Doran (1989), p. 39.

43. Thomas Aquinas, ST, Ia.q75, a.4, ans., p. 366.

44. For example, Suarez, McCormick, Ford, Wallace and Bole, infra.

45. Aristotle, De Anima, 1.5.411b, 14-18, (McKeon, 1941), p. 554; also, 1.5.411b, 24-28, p. 554; for Aquinas, see notes 41 and 39, supra.

46. As the Thomist Klubertanz has expressed it, the human soul, being a form, cannot be divided. The ovum and sperm unite, "thus giving rise to a single cell with the material disposition required for the presence of a soul", in Klubertanz, The Philosophy of Nature, 1953, p. 312. Also see B. Ashley and K. O'Rourke, Ethics of Health Care: An Introductory Textbook (Washington, D.C.: Georgetown University Press, 1994), pp. 149-151.

47. Carlos Bedate and Robert Cefalo, "The zygote: to be or not be a person", Journal of Medicine and Philosophy 14(6), 1989, p. 641 -645.

48. Thomas J. Bole, III, "Metaphysical accounts of the zygote as a person and the veto power of facts", Journal of Medicine and Philosophy 14, 1989: 647-653; also, "Zygotes, souls, substances, and persons", Journal of Medicine and Philosophy 15, 1990: 637-652.

49. Benjamin Lewin (ed.), Genes III (New York: John Wiley and Sons, 1983), p. 681; also Alan E.H. Emery, Elements of Medical Genetics (New York: Churchill Livingstone, 1983), p. 93.

50. In addition to the references on "information cascading", see also those in note 25 supra.

51. Antoine Suarez, "Hydatidiform moles and teratomas confirm the human identity of the preimplantaion embryo", Journal of Medicine and Philosophy 15, 1990, 630.

52. H. Holtzer, J. Biekl and B. Holtzer, "Induction-dependent and lineage-dependent models for cell-diversification are mutually exclusive", Progress in Clinical Biological Research 175:3-11 (1985); Mavilio, F. et al, "Molecular mechanisms of human hemoglobin switching: selective under-methylation and expression of globin genes in embryonic, fetal and adult erythroblasts", Proceedings of the National Academy of Sciences USA 80:22:664-8 (1983); C. Hart et al, "Homeobox gene complex on mouse chromosome II: molecular cloning, expression in embryogenesis, and homology to a human homeo box locus", Cell 43:1:9-18 (1985).

53. Jerome Lejeune (Nobel Prize, genetics), testimony in Davis vs Davis, Circuit Court for Blount County, State of Tennessee at Maryville, Tennessee, 1989; as reprinted in Martin Palmer, A Symphony of the Pre-Born Child: Part Two (Hagerstown, MD: NAAPC, 1989), 9-10.

54. Bedate and Cefalo (1989), p. 641.

55. A.E. Szulmann, U. Surti, "The syndromes of hydatidiform mole. I. Cytogenic and morphologic correlation", American Journal of Obstetrics and Gynecology 131:665-671 (1978); M.S.E. Wimmers, J.V. Van der Merwe, "Chromosome studies on early human embryos fertilized in vitro", Human Reproduction 7:894-900 (1988). See also Suarez, note 61 supra.

Notes 56-110