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聂世芳 《中国生物工程杂志》1983,(4)
公司名NOVO Industri介eh America GrouPGenenteehCetUSCollagen合作研究公司Hybritech50以he饥Biotech分子遗传学公司CytoxEnz。生化公司遗传工程公司Ribi免疫化学公司单克隆抗体公司Bio ResPonse52/81赚 56。7 %82/81 22 0。941084081上八bC︸厅‘OOn舀Q︺︸8 :。..…n,﹄O八On︸ot了,曰qU 一﹄一一出售额%324。2637.4 2328。89016。0 627。4 2756。5 904。8 1681。5 541。1 1461。1一20。9 420。5 1910。3 780。1 88一1.4一一1。3一一1。1一一0。3,一1。1一一1。6一美生物工学公司的财政数据,1982(百万美元)@聂世芳… 相似文献
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<正> 采用双名法命名生物,一般包括一个名词的属名和一个形容词的神名.例如意大利蜜蜂Apt。。。Ilif。,a L.、葡萄十星甲虫 Oidc。dccc-。pu。c。。。。Billb.;但是,少数属名是名词而种名也是名词。例如牛羽虱Bo。icola ho。i。(L.)、狗林头蚤 c。,,co。p4。l。pos ca。。。(nit1S卜··。 拉丁文及拉丁化的其他文字,名词和形容词都有文法性的,阳性、阴性、中性三者,各从词尾表现出,阳性词尾为:-u。、-or、-7r、-o’、-”、。O。等;阴性词尾为:-。、-。、-S、-x、-cs、-。s、-eo。-。G、-。。等;中性词尾为:-。m、-G。、-O。、。。r、-ar、-ma、J。、-r。、J、-。、-C等,其中阳性词尾较多用一us,阴性词尾用一a,中性词尾用一。。,总的用一a为最多。 相似文献
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1IntroductionMnyqllantitativegcheticsmedelsareb明donlinearopresslonswhi咖b皿little,ifany,。lationtothebloch。Icalactionofthegeneorgen。(fedcole1982).FOrkrnannand&yffert(1977)h。develoPedmedelsthst。pr。nt。reCledytheblOCh。IcalSCt1Ofl.IntheirStUdy,SeyffertandForkrnann(976)relatedtheanthOCyanincontentoffi。ersofMatth。lin。。R.Br.tothenUmberoffunctionalalleiescontrollingthattraitbytheBaule-MitSCherllchfunc-tion,They团唱vedth叭thelrobservstlonsonlsogenotyPeSofM.fncan… 相似文献
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IIntMuctiona习nenC6allpoent13asenondynamiCpmpCgIsthemostWidely11。dllethed11。-quencecompgnsonatpresent.Wbenmpingon18I’ge一切degenomempence肛dyslswiththiskindofmethed,wefacetwomperdifficulties,the18ig6stompandtheIOllgmptationaltdrie.My。。dMill。[“spplyHi。比那’stecheniqJ‘、mpen。alipentpwhl。,wb。dgofl山mconsumeSpaceMypZ’Oportlonaltothesumd山eapuencelmphs.AnewpIOgTgnSIM”,utilizingthealgorithm,hasbeenueding。eequ。ceallpoent.How。,themptationaltimebySIMisstilltoolO… 相似文献
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中国蓝果树的胚胎学研究 总被引:5,自引:0,他引:5
中国蓝果树的花芽当年形成。小孢子母细胞减数分裂为同时型。孢子四分体多为四面体形。 花药绒毡层分泌型,细胞具多倍体核。子房常1室,少2室。花柱实心,具引导组织。引导组织在子房室顶端形成珠孔塞。胚珠倒生,悬垂,具单珠被。假厚珠心。珠被维管束延伸进入珠被。孢原细胞1 个,位于珠心表皮细胞之下。孢原细胞直接扩大形成大孢子母细胞。珠心冠大多不存在。蓼型或葱型胚囊。近合点端的无功能大孢子最先压扁退化。珠孔受精。精卵核融合为有丝分裂前型。极核在受精时融合。反足细胞短命。细胞型胚乳。成熟胚与种子近等长,种子叶基部多少心形。子具胚乳。胚和胚乳均不具喜树碱。 同美洲产的蓝果树相比较后,本文总结了蓝果树属较稳定的有分类学意义的胚胎学特征。 相似文献
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《武汉生物工程学院学报》2016,(4)
正盛夏已逝,酷热不再;初冬莅临,颇感寒凉。夜静灯黄,尤为感慨。念千里昭昭,不辞辛劳。待风尘仆仆,奔赴此地。大学之道,我辈求索。怀崇高之敬意,持不懈之诚恳。但看半年岁月,悄然而去。余私下扪心自问,当是问心无愧。 相似文献
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1IntroductionTheoxyg6n-evolvingco…。(OEC)ofphotosystem11(ppfi)isahighlycideredstructllleofvanouspolpotideswhichp~dethebindingsltesfortheInompccofactorsandmedi-atetheactionofthem.(GhanotaldsandYoc1990,DebuS1992,Yoc1991).Thep。essof…。lutiontakesplaceinmD。arthel。佃。-faceofthethylakoidmembrane.Itis“v。byl…恤mpresfo。。-ganese,2。3calciumandsevendCIions.OfthetllleekindsOfionsinvolvedinthephotOSyntheticsPlittingofwater,陶峙见。[[ene——。Ivelyc佃n-tenzed(Ghanota… 相似文献
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In experiments on Black Sea skates (Raja clavata), the potential of the receptor epithelium of the ampullae of Lorenzini and spike activity of single nerve fibers connected to them were investigated during electrical and temperature stimulation. Usually the potential within the canal was between 0 and –2 mV, and the input resistance of the ampulla 250–400 k. Heating of the region of the receptor epithelium was accompanied by a negative wave of potential, an increase in input resistance, and inhibition of spike activity. With worsening of the animal's condition the transepithelial potential became positive (up to +10 mV) but the input resistance of the ampulla during stimulation with a positive current was nonlinear in some cases: a regenerative spike of positive polarity appeared in the channel. During heating, the spike response was sometimes reversed in sign. It is suggested that fluctuations of the transepithelial potential and spike responses to temperature stimulation reflect changes in the potential difference on the basal membrane of the receptor cells, which is described by a relationship of the Nernst's or Goldman's equation type.I. P. Pavlov Institute of Physiology, Academy of Sciences of the USSR, Leningrad. I. M. Sechenov, Institute of Evolutionary Physiology and Biochemistry, Academy of Sciences of the USSR, Leningrad. Pacific Institute of Oceanology, Far Eastern Scientific Center, Academy of Sciences of the USSR, Vladivostok. Translated from Neirofiziologiya, Vol. 12, No. 1, pp. 67–74, January–February, 1980. 相似文献
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