一种由干细胞成长而来的三维脑组织片段可用于研究脑功能失调。虽然奥巴马总统的平价医疗提案引发的论战和摸索主导了2013年的头条新闻,这一年在生物医疗领域也伴有令人兴奋的进展。4月,奥巴马宣布了联邦政府的一个极具抱负的倡议:描绘人脑环路中所有神经的活动,甚至更为理想化地,描绘整个人 A three-dimensional brain tissue fragment derived from stem cells can be used to study brain dysfunction. Although the controversy and gropings emanating from President Obama’s affordable medical proposals dominated the 2013 headline, there was also exciting progress in the biomedical field this year. In April, Obama announced an ambitious initiative by the federal government that describes all the nerves in the human brain and, even more idealistically, depicts the entire person