在理论上，人胚干细胞的分离能使科学家们在实验室培养出人体任何组织，但在实践上，这并非易事每天清晨，加利福尼亚大学发育生物学家加利·安德逊（CeqAnde。）步入实验室时，映人眼帘的是一幅惊人的景象：满玻片的心肌细胞正在有节律地搏动——有时是乱糟糟的一团神经组织或 In theory, the separation of human embryonic stem cells allows scientists to develop any body tissue in the laboratory, but in practice this is not an easy task Every morning, the University of California developmental biologist Gary Anderson (CeqAnde.) When you walk into the lab, you see a striking sight: full-sized cardiomyocytes are beating rhythmically - sometimes a mess of nerve tissue or