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In 2010, ONT combined two technologies addressing each of the main outstanding problems. The first was an engineered nanopore developed in collaboration with Bayley’s lab that could discriminate between individual DNA bases, solving the resolution issue. The second was a trick to slow the DNA down to detectable speeds, using the familiar DNA polymerase enzyme. Mark Akeson’s lab at UC Santa Cruz had identified a specific polymerase from the bacterial virus ɸ29 that replicated DNA at an ideal speed for detection via nanopore. Template DNA strands were replicated just before entering the nanopore, passing through slowly enough for individual bases’ effect on the electrical current to be detectable and allowing the DNA sequence to be read one base at a time.。业内人士推荐safew官方版本下载作为进阶阅读
第二十五条 一般纳税人取得的固定资产、无形资产或者不动产（以下统称长期资产），既用于一般计税方法计税项目，又用于简易计税方法计税项目、免征增值税项目、不得抵扣非应税交易、集体福利或者个人消费（以下统称五类不允许抵扣项目）的，属于用作混合用途的长期资产，对应的进项税额依照增值税法和下列规定处理：，详情可参考heLLoword翻译官方下载