DURHAM, N.C.-- Scientists have linked a recently discovered gene to a rare nervous system disease called hereditary spastic paraplegia, for which there is no cure.

• 科学家最近发现一种新的基因可能与罕见的神经系统疾病--遗传性痉挛性截瘫有关，该疾病目前尚无有效的治疗方法。