avirulent 中文意思是什麼

avirulent 解釋
adj. 形容詞 無毒性的。

  1. Newcastle disease virus ( ndv ) strain 695, a thermostable nature avirulent strain, were replicated in embryonated chicken eggsand its rna was extracted from allantoic fluid. referred to the reported sequence of f gene, a pair of primers were designed and synthesized. f gene of ndv b95 strain was amplified by rt - pcr, the pcr products were checked by agrose gel electrophoresis and purified by agrose gel fracion method

    利用從國外引進的新城疫熱穩定性天然弱毒b _ （ 95 ）株接種spf雞胚繁殖病毒，經處理后提取病毒的基因組rna ，參考國內外發表的ndv融合蛋白基因序列，設計一對特異性引物，經反轉錄聚合酶鏈式反應（ rt - pcr ）擴增出約1700bp大小的特異性片段，將此片段回收純化后，利用t - a克隆技術將其克隆到pgem - t - easy克隆載體中，再轉化大腸桿菌jm109感受態細胞，轉化后經分子量比較、 pcr鑒定和酶切分析篩選陽性克隆。
  2. Want security, avirulent, without remain or little remain

    要安全，無毒，無殘留或少殘留
  3. Now many laboratories have used avirulent strains of s. typhimurium to deliver h. pylori antigens as a way of stimulating an immune response to those determinants

    以鼠傷寒沙門氏菌標準株基因組dna作為模板，採用pcr的方法克隆了鼠傷寒沙門氏菌asd基因，經序列分析與文獻報道一致。
  4. One of these pr genes, pr - la, responds not only to avirulent pathogen, but also to some chemicals, such as sa ( salicylic acid ) and bth ( benzothiadiazole ) etc., and the responding ability to the inducers is controlled by its promoter

    其中一個pr基因pr - 1a ，不僅受病原菌誘導，而且受一些化學劑如sa 、 bth等化學劑的誘導，其誘導應答由其啟動子控制，因此pr - 1a啟動子可以應用於植物化學誘導系統中。
  5. Most of plants, when attacked by avirulent pathogens, usually produce a hypersensitive response ( hr ) at the locus attacked and develop a systemic acquired resistance ( sar ) throughout entire plant by expressing a set of defense genes including pathogenesis - related ( pr ) genes

    植物受到病原菌侵染后，感染部位產生過敏性壞死反應，在其它部位產生系統獲得性抗性並伴隨抗性基因包括病程相關蛋白（ pathogen - relatedprotein ）基因的表達。
  6. Finally, avirulent and virulent plant, bacteria of pseudomonas solanaceanim was investigated by chromatography. the result showed that there are two peaks when both bacteria was eluted, but their peak area ratio was quite different. when virulent bacteria was subject to chromatography after vibration by ultrasonic wave, both chromatographial behaviors of both avirulent and virulent pseudomonas solanaceanim were same basically, which showed a equilibrial peak and a eluting one

    最後，表徵了植物病原菌? ?青枯菌的強、弱致病菌株，結果顯示強、弱菌都有兩個洗脫峰，但峰面積比例有明顯的差異，強弱致病菌株經振蕩后，其色譜行為基本相似，表現為一個穿透峰和一個洗脫峰。
  7. Electron microscopy showed that virulent pseudomonas solanaceanim grown in gathering form and avirulent pseudomonas solanaceanim did in free form. so that two different monomers were estimated to comprise pseudomonas solanaceanim the research above will expand application of traditional hplc and deepen its potential in bacteria studying

    結合電鏡觀察，證明強致病菌株主要是以聚集形式生長，而弱致病菌株則以游離分散的形式生長，並可以推測青枯菌可能存在兩種不同的單體。
  8. In recent years, the outbreak of nd appear some new characters, it is reported that the amount of immunity defeat on nd increased, even chicks with high hi titer can be infected by ndv virulent strain. the gene - engineering vaccine is badly needed to control nd outbreak. so newcastle disease virus strain b95, a naturally avirulent and heat stable strain, was introduced from australia

    新城疫是國際獸疫局公布的16種烈性傳染病之一。近年來，新城疫的爆發出現了許多新特點，免疫失敗報道增多，甚至抗體水平較高的雞群也發病。為控制新城疫的爆發，急需研製基因工程苗。
  9. This test chooses general industrial vc / vac copolymer as raw material, various supplement material additives are also the common conventional avirulent additive on industry ; the plastic material processing routine is also the universal method to make the thermoplastic plate of low temperature of vc / vac copolymer that accords with medical requirement that its softening temperature is 55

    本試驗選用氯醋共聚樹脂為主要原材料，所用輔料添加劑也是工業上常見的無毒性常規添加劑；採用常規的塑料加工成型方法及設備製造出軟化點為55的、符合醫用要求的低溫熱塑性氯醋共聚樹脂板材。
  10. From dead chickens, one virrus was isolated by using eggs and chicken embryo fibroblast. lt was able to agglutinate chicken ' s erythrocytes and this heamagglutination could be inhibited by newcastle disease antiserum. this strain ' s biological property was tested by barren spot, cross - enutralization and cross - heamagglution inhibited and it was found that it was homological with the standard newcastle disease virus ( ndv ) virulent strain and avirulent strain but it had some diference with the standard strain

    本實驗採用spf雞胚及雞胚原代成纖維細胞，從河北省某雞場新城疫免疫抗體很高的病死雞的腦組織中分離得到一株病毒。此株病毒能凝集雞的紅細胞，並且這種凝集可以被特異性抗血清所抑制。
  11. If use avirulent or small poisonous matter to replace toxic carcinogenic substance ; if cannot avoid to use or produce the material that has the effect that cause cancer, should limit the content of poisonous material in raw material, utmost reduces carcinogen to be discharged to the middle of producing an environment, strengthen ventilated, reduce dust to discharge ; reform technological process, use as far as possible automation, mechanization and sealed change producer style, reduce carcinogen and human body to be contacted directly

    如採用無毒或低毒物質替代有毒致癌物質；如無法避免使用或生產有致癌作用的物質，應限制原材料中毒物質的含量，最大限度減少致癌物質向生產環境中排放，加強通風，減少粉塵排放；改革工藝流程，盡可能採用自動化、機械化和密封化生產方式，減少致癌物質與人體直接接觸。
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