biological strain 中文意思是什麼

biological strain 解釋
【生物學】生物小種。

  • biological : adj. 生物學（上）的。 a biological test 生物學檢驗。n. 【藥學】生物製品，生物制劑。adv. -ly 生物學地，生物學上。
  • strain : vt 1 用力拉，拉緊，抽緊，扯緊。2 使緊張；盡量使用（肌肉等）。3 強迫，強制；濫用，盡量利用。4 拉傷...
  1. 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。
  2. In this paper, a field strain of infectious bronchitis virus was isolated from proventriculus tissue, morphological observation by electron - microscope and the biological characterizations of the virus were studied, pairs of specific primers are designed and synthesized in correspondence with them, according to the published sequences of infectious bronchitis virus three structural protein ( spike protein s membrane protein m nucleocapsid protein n ) genes, the cdna of si gene, s2 gene, m gene. n gene of ib v isolate lx4 were amplified by rt - pcr and full sequences were first reported

    在此基礎上，根據國內外已發表的ibv基因序列，分別設計特異性引物，應用不同引物進行反轉錄合成cdna ，分片段對ibv的主要結構基因進行pcr擴增，並分別將各個目的片段克隆到puc19載體上，在大腸桿菌dh5中實現目的基因的分子克隆，經藍白斑篩選、限制性內切酶分析、 pcr鑒定，篩選出重組陽性質粒，並對各個目的基因片段進行序列測定，從而獲得ibv主要結構基因全序列。
  3. The measurement of biological soft tissue internal strain distribution under compression

    生物軟組織內部壓縮應變的測量與分析
  4. From dead chicken which infected infectious stunting syndrom of our province, one virue was isolated using spfeggs, chicken embryo fibroblast, mdck18, and vero cell. this virus was unable to agglutinate chicken erythrocytes. in order to definite the pathogeny of infectious stunting syndrom. physical and chemical specific property, types of the nucleic acid of the isolated virus, recurrent infection and other biological property determination and indirect elisa test proved it as a parvoviruses like strain of chicken

    為確定該病的病原，對所分離病毒進行了理化特性測定、病毒核酸型別測定、動物回歸試驗等生物學特性測定，證明該分離病毒與細小病毒科（ parvovirdae ）細小病毒屬（ parvovirus ）的雞細小病毒（ chickenparvovirus ）特性基本相符，核酸型為dna型。
  5. The result shows that a vvibdv strain was obtained, the above work lay a important role for further studying on the molecular biological mechanism of antigenic drift and virulence variation of ibdv, molecular epedimiology, it also provided the basis for recombinant and gene deleted vaccine of ibdv

    本實驗可以幫助我們進一步探討ibdv抗原性漂移和毒力變化的分子生物學機制，追溯ibdv的起源，理解病毒的傳播方式。同時也為研製開發基因重組疫苗和缺失疫苗打下一定的基礎。
  6. The hwtx - i gene was chemically synthesized according to its known cdna sequence, the gene was inserted into vector ppic9k which contained aoxj promotor and the sequence of a secreting signal peptide - a - factor, the cloning ppic9k / hwtx - i was constructed and confirmed by two - step pcr and dna sequence analysis, then it was transformed into host strain gs115, a his + muts cell line was screened and multicopy transformants were screened by various g418 concentrations, the multicopy transformant was named gh1. gh1 was cultivated in flasks. after 6 days of induction by 0. 5 % methanol, the supernatant was checked by 16. 5 % tricine - sds page, which showed there was a band in the position of 3. 5 - 6. 1kd, then it was isolated and desalted by ultrofiltration followed by ion exchange of cm column, after reverse phase hplc of ci8 and vacuum drying, the purified rhwtx - 1 was obtained which was proved to be correct recombinant hwtx - i by tricine sds - page, maldi - tof mass spectrometry, amino acid composition analysis, the n - terminal amino acid sequence and its biological activity, the final field of the purified rhwtx - i was about 80mg / l, accounting for 23. 6 % of it total secretory proteins

    將帶有hwtx -基因的ppic9k經blgii線性化后，轉化酵母宿主菌gs115原生質體后經篩選陽性克隆並經表型鑒定為his ~ + mut ~ s酵母菌，進一步用遺傳毒素g418篩選多拷貝的轉化菌株，命名為gh1 ；將gh1甲醇酵母菌用0 . 5的甲醇誘導表達，發酵上清經90飽和度的（ nh _ 4 ） _ 2so _ 4沉澱， yw - 3 （ mwc03000 ）的超濾膜超濾，再經cm陽離子交換， c _ （ 18 ）反相hplc純化得到分子量為4kd左右的組分，其中4289 . 05的組分經質譜鑒定，氨基酸組成分析和序列測定為正確的表達產物，生物學活性表明其活性為天然毒素活性70 % ，表達量為80mg / l 。
  7. In the experiment, tick - borne encephalitis virus ( tbev ) mdj - 01 strain isolated in mudanjing in 2001 was identified. and the biological characters and molecular biological characters were studied on, with senzhang strain isolated in 1953 as a control

    本試驗對2001年自牡丹江分離的森林腦炎病毒（ tbev ） mdj - 01株進行了鑒定以及生物學性狀和核苷酸全序列的測定的研究。整個試驗以1953年分離的tbev森張株為對照。
  8. Establishment of inbred strain of mutant hairless mice and its biological characteristics

    突變無毛小鼠近交系的育成及特性
  9. The biological properties of mutants of hyperparasites strain pr and f46 by ultraviolet radiation were studied

    摘要利用紫外線照射誘導兩種重寄生放線菌pr和f46 ，並對誘導產生的誘變菌株的特性進行了初步研究。
  10. The close genetic relationship of goose parvoviruse and aav allows the examination of the molecular biological properties of the nonstructural proteins of gpv. after the gpv infected the cell the viral life cycle was regulated by the nonstructural proteins encoded by the virus. according to the published of gpv b strain genome nucleotide sequences in genbank and a pair of specific primers were disigned with oligo4. 1

    本研究根據genbank發表的gpvb株全基因序列，藉助oligo4 . 1軟體設計一對引物，採用pcr技術擴增gpvh1株非結構蛋白ns2基因，並與pmd18 - t載體連接后測序，結果表明：鵝細小病毒h1株ns2基因核苷酸全長1356bp ，編碼451個氨基酸殘基，與gpvb株的ns2基因相比，核苷酸數目相同，有17個堿基、 6個氨基酸的差異；同源性分析表明：二者核苷酸序列同源性為98 . 75 ，推導氨基酸序列同源性為98 . 67 。
  11. Using rh 109 - 2 as original strain, we investigated the biological characteristics of fusion cells

    最後，以rh109 - 2為出發菌株，對融合重組子進行了生物學特性的考察。
  12. Establishment of tw inbred strain derived from wild mouse and studies on its biological characteristics

    小鼠近交系培育及其生物學特性的研究
  13. Major difference of hn proteins lies in no. 18 - no. 75 amino acid residues on n - terminal which includes three active sites of hn protein. the influence on biological action, caused by the difference of hn protein, is needed to study further. hn gene has only four glycosylation sites, which is 1 or 2 less on amount than that of other strains. so, this difference can be take on as a natural mark of ndv b95 strain furthermore, the fragment encoding hn gene was excised from the positive clone pgem - hn with sail and saci enzyme, and purified by agrose gel fraction method. then the fragment was subcloned into the pet - 28c expressing vector digested by sail and saci restriction enzyme

    作者將正確的重組克隆質粒pgem - hn用saii 、 saci雙酶切，電泳回收目的片段，將其亞克隆到經saii 、 saci雙酶切處理的pet - 28c中，轉化大腸桿菌tgi感受態細胞，得到的轉化子經pcr鑒定和酶切分析，篩選出符合閱讀框的重組子，構建成重組表達質粒pet - hn ，並在大腸桿菌bl _ （ 21 ） （ de _ 3 ）宿主菌中成功地表達了含目的蛋白的融合蛋白，融合蛋白的分子量約66kd ，加入iptg誘導8h后，蛋白表達幾乎達到最高水平。
  14. Mdj - 01 strain was compared with senzhang strain in biological characters and complete genome sequence. all helped to ascertain the cause for tick - borne encephalitis erupted in china northern eastern in late years, to study on the complete cdna of tbev, genome structure and function, diagnose, prevalence and therapy. the 12 subtype - special amino acids but 486 amino acids were n ' t reported, and were important to identify tbev strain isolated newly with which subtype

    本試驗對mdj - 01株和森張株進行了生物學性狀和基因組全序列的比較，這將有助於闡明近年來tbe在我國東北再次發生流行的原因，同時為tbev全長cdna克隆、基因組結構與功能、診斷、防治等研究打下基礎。
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