例句與造句

1. Pcr - based analysis method was carried out in the following study . dna amplification by pcr in cgg repeats were performed on 154 people as normal control ( 73 males and 81 females ) and 23 members from four x - linked mental retardation ( xlmr ) families . after electrophoresed on a 6 % - denaturing polyacrylamide gel ( acr : bis = 19 : l ) , genotypes of the objects were determined by analyzing pcr products
   本研究采用較以往更為簡便有效的pcr技術方法，對隨機抽取的154人的正常群體（男性73人、女性sl人）及來自四個智力低下家系的23名成員進行了fmr基因cgg重復序列的擴增，利用變性聚丙烯酸胺凝膠電泳技術對不同等位基因類型進行分離和統計。
2. Fxs is characterized by x - linked mental retardation with additional features such as a long face with large protruding ears , macroorchidism , and eye - gaze avoidance etc . fxs is associated with a fragile site , designated fraxa ( fragile site , x chromosome , a site ) , at xq27 . 3 near the end of the long arm
   其主要臨床特征為智力低下、特殊的外貌特征(包括長臉、大耳廓、下頜突出、巨頭、腭弓高、大睪丸等) 、行為及認知障礙、多動、注意力難集中以及孤獨、自閉等癥狀。
3. It's difficult to find x-linked mental retardation in a sentence. 用x-linked mental retardation造句挺難的