①基因大追踪 1993年是基因工程师们争先恐后解开人类DNA之谜成果累累的一年。科学家们不仅准确地定出了与六种以上主要疾病有关的基因(包括结肠癌、过敏、糖尿病等),而且还画出了全部人类染色体的第一张草图。其它的研究工作者对利用这个信息来更换受破坏基因的方法进行了探索。第一批“基因疗法”的受益者——俄亥俄州两个患免疫缺陷的女孩——在三年成功的治疗后首次露面。还有50多个类似的实验正在进行之中。 Gene tracing 1993 was a year where genetic engineers vied to solve the mystery of human DNA. Scientists have not only accurately pinpointed genes associated with more than six major diseases (including colon cancer, allergies, diabetes, etc.), but also drawn the first sketch of all human chromosomes. Other researchers have explored ways to use this information to replace damaged genes. The first beneficiaries of Gene Therapy - two immunodeficient girls in Ohio - made their debut after three years of successful treatment. More than 50 similar experiments are in progress.