A military official tells VOA the Chairman of the Joint Chiefs of Staff, Admiral Mike Mullen, traveled to Germany Friday for an unannounced half-day meeting on a U.S.Air Base with the Afghanistan commander, General Stanley McChrystal.

VOA: standard.2009.09.25

When it cuts it leaves sticky ends or un-base paired single stranded regions on each end of the part its cut and that's just a property of many restriction enzymes; not all, some cut blunt,just right down the middle.

它切割后会留下两个粘性末端,或者未配对的单链部分,这是许多限制性内切酶的特性,但不是全部,有些限制性内切酶是从中间钝切的

耶鲁公开课 - 生物医学工程探索课程节选

"Well we are talking approximately about 99 square miles, and its sovereign base area which is land which is effectively governed by the UK and has an on-island administration that acts on behalf of the Queen in managing and governing that land,".

VOA: standard.2009.11.11