细菌有一种对病毒的防御机制：一种叫做限制性内切酶的化学物质可以切断外源dna。
Bacteria have defences against viruses in the form of chemicals called restriction enzymes, which chop up foreign DNA.
治疗过程中除了观察临床症状及体征外，并观察心电图及心肌酶谱、心功能。
In the process of treating, not only the clinical symptom and sign, but also electrocardiogram, myocardium and cardiac function were observed.
体外实验中对相应受体进行刺激后导致对细胞外信号调节酶（ERK）的激活有促进作用。
Stimulation of this receptor in vitro results in up-regulation of activated extracellular signal–regulated kinase (ERK).
目的探讨胆汁型碱性磷酸酶同工酶在恶性肝外胆道阻塞诊断中的价值。
Aim To investigate the value of bile alkaline phosphatase isoenzyme in diagnosis of malignant extrahepatic biliary obstruction.
通过控制酶解条件，蚯蚓可以利用自身的酶源自溶来代替外源酶，从而降低成本。
Through controlling enzymatic hydrolysis, earthworm can avail itself of the enzyme instead of exogenous enzymes, which can reduce the cost.
试验结果还发现泥炭除对磷酸酶活性有促进作用外，测定的其它几种酶活性几乎都不高于对照。
The results also show that peat does not advance the activity of soil enzyme except the activity of phosphatase compared with the control.
本文除介绍了一些新的化学核酸酶体系外，着重对它们的作用方式及作用机理进行了讨论。
In addition to introducing some new chemical nuclease systems, this paper stresses on the discussion of their action modes and acting mechanisms.
酶活性测定表明，除了果肉外的其它器官中都有芥子酶活性，这与RT-PCR的结果是一致的。
Myrosinase activity was detected in all the tested organs except for pulp, which is consistent with the result of RT-PCR.
目的：研究白念珠菌细胞外磷脂酶活力与其对氟康唑耐药性之间的关系。
Objective: To study the relationship between extracellular phospholipase activity and development of fluconazole-resistance in Candida albicans.
白毒鹅膏菌是一种重要的产生胞外漆酶的菌株。
Amanita Verna is an excellent producer of the industrially important enzyme laccase.
目的：探讨透视监控下，进行腰椎间盘突出症胶原酶溶解术盘外注射的穿刺方法及其安全性与准确性。
Objective:To discuss the puncture method, security and accuracy injecting collagenase outside the lumbar disc for treating lumber disc herniation under fluoroscopy monitor.
外源基因在细胞内的酶切保护问题是影响基因转染成败的重要因素之一。
Protection of exogenous genes against intracellular conditions is one of key factors in gene transfection.
结论：除增龄外，高血压病患者外周血单个核细胞有端粒酶活性异常表达，且与增龄无明显关系。
Conclusion: Except age increase, there is abnormal expression of telomerase activity in nucleus cell of blood of patients with hypertension.
用白鲢制作腌腊鱼，研究外源脂肪酶对腌腊鱼品质的影响，探索脂肪酶在腌腊鱼风味形成中的作用。
To explore function of lipase on flavor development of cured fish, effect of exogenous lipase on quality of cured fish with sliver carp was studied.
本文采用聚丙烯酰胺凝胶电泳的方法，对利用花粉管通道途径，导入外源DNA所获大豆变异后代，进行过氧化物酶酶谱分析。
With the method of polyacrylamide gel electrophoresis analysis of the peroxidase patterns in variant progenies of soybean obtained by introduction of DNA through pollen tube.
在孢子细胞外被与质膜间也观察到非溶酶体酸性磷酸酶。
Non-lysosomal acid phosphatase was observed between the spore coat and spore membrane.
这些天然抗氧化剂对脂氧合酶介导外源化合物氧化和活化的抑制作用可能是其抗毒防癌作用的机制之一。
The inhibitive effect of natural antioxidant on oxidation and activation of xenobiotics mediated by lipoxygenase may be one of the mechanisms of its anti-toxic and anti-tumor effect.
外源ABA处理增加内源ABA含量，加快内源IAA的降解，促使脂氧合酶活性峰值提前出现，加速果实软化；
Exogenous ABA treatment promoted the increase in endogenous ABA content, quickened the degradation of endogenous IAA, increased lipoxygenase activity and accelerated fruit ripening and softening.
进行无菌检查、细胞核型和同工酶谱分析，了解细胞遗传稳定性、外源因子污染和细胞间交叉污染情况。
The cells were tested for karyotype, sterility, contamination with exogenous agents and cross contamination, and analyzed for genetic stability by isoenzyme map.
外源植酸钠的存在，显著降低了AM真菌根内菌丝的碱性磷酸酶活性，增加了AM真菌在土壤中的菌丝密度。
The ALP activity in intraradical hyphae of AM fungi was significantly decreased, and the total hyphal density of AM fungi increased with applied Na phytate.
酸性磷酸酶染色显示包绕并吞噬分解外源蛋白的结构是呈染色阳性的溶酶体结构。
An acid phosphatase staining was performed in order to confirm that the autophagosome-like structures have lysosomal enzymes, the structures displayed positive staining.
这两种病原对甜瓜不同的致腐方式是由它们不同的外泌胞壁降解酶种类和酶学特性所决定的。
The way of the different rot of the two pathogens are highly depended upon their different secretory cell wall degrading enzymes.
结果除临床表现心肌受损的症状外，心肌酶和肝酶均有不同程度改变。
Results the myocardial and hepatic enzymes were varied changed besides the symptom of myocardial injury.
目前已在分子水平上，证实了甘蓝黑腐病黄单胞菌产生的胞外蛋白酶在致病过程中起着重要的作用。
Recently, the extracellular proteases produced by Xanthomonas campestris pv. campestris have been demonstrated at molecular level to be important in pathogenicity.
加入外源硝态氮培养后叶片硝酸还原酶活性的增加程度与叶柄硝态氮含量相一致。
The percentage increase of blade NRA after cultivated by extra-source nitrate was positively related to the petiole nitrate-N concentration.
混合菌能完全降解pva，并产生胞外pva降解酶。
Mixed bacteria could degrade poly (vinyl alcohol) (PVA) completely and produce extracellular PVA-degrading enzyme.
目的：观察一氧化氮合酶(NOS)在雏鸡外周前庭系统中的分布。
Objective: To locate nitric oxide synthase (NOS) in the chicken vestibular system.
目的探讨急性脑梗死患者血清基质金属蛋白酶- 9 (MMP - 9)及外周白细胞(WBC)计数的变化。
Objective To study the changes of serum MMP-9 concentration and WBC count in acute cerebral infarction patients.
目的探讨急性脑梗死患者血清基质金属蛋白酶- 9 (MMP - 9)及外周白细胞(WBC)计数的变化。
Objective To study the changes of serum MMP-9 concentration and WBC count in acute cerebral infarction patients.
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