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It was nearly a decade in the making, but the first human trial using embryonic stem cells was approved on Friday. The trial, which will test a stem-cell-based treatment for spinal-cord injury, will begin later this summer and will use cells generated by Geron Corp. The approval marks the first time human stem cells, extracted and grown from embryos, will be transplanted into patients. Adult stem cells, which are present in many types of tissue, have been used in treatments for years — the most common being bone-marrow transplants in cancer care — but an embryonic study is a whole new thing. There's a good reason it's being greeted with so much excitement. Scientists believe that embryonic stem cells are more versatile than adult cells in generating the more than 200 different tissue types in the body. The need for healthy new cells is particularly acute in the case of spinal-cord injury, because once central-nervous-system tissue is destroyed, it does not regenerate — not in any significant way, at least. The Geron team began its work with what is known as a presidential stem-cell line — stem cells derived from discarded in vitro–fertilization embryos that already existed in 2001 when then President Bush decided to prohibit the use of federal funds to pursue human embryonic-stem-cell work. At the time, fewer than two dozen of these stem-cell lines were of good enough quality to use as a basis for human treatments.
【題組】What was the problem of embryonic stem cells in 2001? 
(A)Not enough cells were qualified for use as treatments. 
(B)Not sufficient funding to support research programs. 
(C)Not many medical teams were interested. 
(D)Many religion activists fought against it ferociously.

答案：登入後觀看
難度： 困難
1F
Chun Jen Wan 高二上 (2012/02/21)

在2001年的胚胎幹細胞中存在的問題是什麼？

(A)沒有足夠的細胞，為有資格人治療使用。

(B)沒有足夠的資金支持的研究項目。

(C)沒有太多的醫療隊有興趣。

(D)許多宗教人士反對它兇猛。


2F
業精於勤，事立於豫 研一下 (2017/05/04)

At the time, fewer than two dozen of these stem-cell lines were of good enough quality to use as a basis for human treatments. (在當時品質夠好的幹細胞系少於兩打，不足以做為人類治療的基礎。)


由最後一句可知，當時沒有足夠的胚胎幹細胞為人類治療。

3F
綠璐 高三下 (2019/03/09)

At the time, fewer than two dozen of these stem-cell lines were of good enough quality to use as a basis for human treatments.

當時，不到二十幾種這些幹細胞系的質量足以作為人類治療的基礎。


It was nearly a decade in the making, bu..-阿摩線上測驗