我们需要确切知道胚胎干细胞的来源。
该中心没有透露胚胎干细胞具体来自哪些三甲医院。[{'character': '该', 'pinyin': 'gai1', 'highest pitch': 9.79, 'lowest pitch': 8.67, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '中', 'pinyin': 'zhong1', 'highest pitch': 10.29, 'lowest pitch': 8.67, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '心', 'pinyin': 'xin1', 'highest pitch': 10.31, 'lowest pitch': 9.82, 'duration': 0.25, 'prosody hierarchy': '#2'}, {'character': '没', 'pinyin': 'mei2', 'highest pitch': 9.82, 'lowest pitch': 7.21, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '有', 'pinyin': 'iou3', 'highest pitch': 10.22, 'lowest pitch': 8.27, 'duration': 0.13, 'prosody hierarchy': '#1'}, {'character': '透', 'pinyin': 'tou4', 'highest pitch': 8.27, 'lowest pitch': 6.64, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '露', 'pinyin': 'lu4', 'highest pitch': 6.64, 'lowest pitch': 4.43, 'duration': 0.22, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.05}, {'character': '胚', 'pinyin': 'pei1', 'highest pitch': 8.11, 'lowest pitch': 6.8, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '胎', 'pinyin': 'tai1', 'highest pitch': 7.84, 'lowest pitch': 6.8, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '干', 'pinyin': 'gan4', 'highest pitch': 8.12, 'lowest pitch': 6.39, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '细', 'pinyin': 'xi4', 'highest pitch': 6.68, 'lowest pitch': 6.06, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '胞', 'pinyin': 'bao1', 'highest pitch': 8.11, 'lowest pitch': 7.03, 'duration': 0.25, 'prosody hierarchy': '#2'}, {'character': '具', 'pinyin': 'jv4', 'highest pitch': 10.67, 'lowest pitch': 9.21, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '体', 'pinyin': 'ti3', 'highest pitch': 9.21, 'lowest pitch': 5.58, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '来', 'pinyin': 'lai2', 'highest pitch': 5.71, 'lowest pitch': 5.03, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '自', 'pinyin': 'zii4', 'highest pitch': 7.58, 'lowest pitch': 5.71, 'duration': 0.16, 'prosody hierarchy': '#2'}, {'character': '哪', 'pinyin': 'na3', 'highest pitch': 6.87, 'lowest pitch': 5.71, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '些', 'pinyin': 'xie1', 'highest pitch': 10.04, 'lowest pitch': 9.14, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '三', 'pinyin': 'san1', 'highest pitch': 9.92, 'lowest pitch': 7.47, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '甲', 'pinyin': 'jia3', 'highest pitch': 8.09, 'lowest pitch': 5.05, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '医', 'pinyin': 'i1', 'highest pitch': 6.31, 'lowest pitch': 5.26, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '院', 'pinyin': 'van4', 'highest pitch': 6.86, 'lowest pitch': 5.26, 'duration': 0.28, 'prosody hierarchy': '#4'}]