囊肿患儿三种胆汁中四种初级结合型胆汁酸的含量及G/T ，CA/CDCA均降低， 胆汁酸组分比的变化，也是易产生结石的原因。
The content of four conjugated bile acid, CA/CDCA, G/T were all lowered in the bile of children with CCC, and the decrease was responsible for the formation gall stones.
尽管面临挑战，两种登革候选疫苗已在登革热流行国家进行后期临床评价，一些其他候选疫苗尚处在较为初级的开发阶段。
Despite these challenges, two vaccine candidates have advanced to evaluation in human subjects in countries with endemic disease, and several potential vaccines are in earlier stages of development.
尽管这项研究还处在非常初级的阶段，但是如果能改进完善，基于碳纳米管的电池将可以提供一种更有效的方法将光转化为电能。
Though still in the very early stages of development, if perfected, carbon nanotube-based cells could provide a more efficient method of converting light to electricity.
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