片劑的斑點 的英文怎麼說
中文拼音 [piānjìdebāndiǎn]
片劑的斑點
英文
tablet mottling- 片 : 片構詞成分。
- 劑 : Ⅰ名詞1 (藥劑; 制劑) a pharmaceutical or other chemical preparation 2 (某些有化學作用的物品) a...
- 的 : 4次方是 The fourth power of 2 is direction
- 斑 : Ⅰ名詞(斑點; 斑紋; 污點; 瑕疵) spot; speck; speckle; stripe; stain Ⅱ形容詞(有斑點或斑紋的) spo...
- 點 : Ⅰ名詞1 (液體的小滴) drop (of liquid) 2 (細小的痕跡) spot; dot; speck 3 (漢字的筆畫「、」)...
- 斑點 : spot; stain; speckle; freckle; fleck; dot; splodge; splotch; burl; flick; macula; measles; tache
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After electrophorised on 1 % agarose gel, the pcr production was purified with agarose gel dna extraction kit. the segment was ligated with vector pmd18 - t and then was tranformed into the competent cell of dh5 a. a construction mstnd - pmd18t was generated by inserting the sequence of 254bp into pmd18 - t vector and selecting the sense clones. positive clone was identified by three ways : endonuclease digestion, pcr and sequencing. the result showed that the cloned sequence coincides with the designed sequence. this construction was digested with nco i and xho i and ligated the pet28a ( + ) vector digested with the same enzymes using dna ligation kit. the production of ligation reaction was transformed into the competent cell of bl21 ( de3 ). after 12 - 16 hours of culture, several colnes appeared on the plate. some positive clones were selected to extract their plasmid. these plasmids were digested by nco i and xho i and indentified by pcr. a contraction, mstnd - pet28a was generated. the result showed that the cloned sequence coincides with the designed sequence
F _ 1長38bp , r _ 1長36bp ,其它片段均40bp長, f _ 1和r _ 1片段兩端分別加上限制性內切酶nco和xho的識別位點序列。用成對單鏈片段進行延伸反應,然後用其他單鏈片段作為引物,進行pcr擴增,用dna快速純化回收試劑盒回收所得254bppcr產物,與pmd18 - t載體連接、轉化dh _ 5 。受體菌感受態細胞,利用藍白斑遺傳學篩選法篩選陽性克隆,提取其質粒,採用nco和xho雙酶切鑒定,獲得了254bp的片段;用pmd18 - t載體上的特異引物rv - m和m13 - 47進行pcr鑒定,獲得300bp的片段。
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