53. Walters and Palmer, The Ethics of Human Gene Therapy, pp. 85, 112; Mario RCapecchi,“Human Germline Gene Therapy,” Engineering the Human Germline,
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54. Stephen Jay Gould,“Message from a Mouse; It Takes More than Genes to Makea Smart Rodent, or High-IQ Humans,” Time, September 13, 1999, 154:11, p. 62