赫尔辛基大学萨克森所领导的一个小组,可能已具有重要的证据表明,存在着主要的生物化学物质可控制发育过程中细胞建造器官的方法。在最近的实验中,该小组已研究了鼠肾的发育(《国家科学院会议录》77卷485页)。肾是从两部分——间质细胞和上皮细胞发育而来的。在发育过程中,上皮诱发间质形成肾小管,随着肾小 A team led by the University of Helsinki Saxony may already have important evidence that there are major biochemical substances that can control how cells build organs during development. In a recent experiment, the team has studied the development of rat kidney (The National Academy of Congress, vol. 77, p. 485). The kidney develops from two parts, mesenchymal cells and epithelial cells. During development, the epithelium induces mesenchymal tubule formation, with small kidneys