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随着临床上恶性肿瘤放射及化疗的广泛应用，寻找一种有效保护骨髓免受抑制性损害的手段日益受到重视。对此，我们从1990年开始了这方面的实验室研究，结果揭示人胚组织中小分子物质无论是在离体的细胞培养，还是在小鼠整体实验观察，均表
With the widespread application of radiotherapy and chemotherapy in malignant tumors, finding an effective means to protect the bone marrow from the inhibitory damage is receiving more and more attention. In this regard, we started in 1990, laboratory studies in this area, the results revealed that human embryonic tissue small cell material either in vitro cell culture, or the overall experimental observation in mice, were