Conclusion : The effective composition which could cure ARF in foetus renal cells was an active thermostabile cellular factor which might exist only in foetus renal cells or had maximum content only in foetus renal cells .

结论：胎肾细胞 移植治疗ARF的有效成分是一种 分子 量 为 28000， 耐热 的 具有活性的细胞因子，这种因子可能仅存在胎肾内或只有胎肾内含量最高。