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The antibiotic 2507 has also satisfactory effect for controlling chinese cabbage downy mildew disease infected by Peronospora parasitica Fr. with efficacy 87.5% in field test.

结果表明，抗生素2507在温室人工接菌情况下，防治黄瓜疫病的效果可达95%以上，田间小区防治小白菜霜霉病的效果达到87.5%。

Pectoralis major muscle flap closure of infected deep sternal wound is effective in infection control and with minimal long-term complications, and may be considered to be used as primary treatment of post-operative deep sternal wound infection.

使用胸大肌皮瓣来覆盖感染性的深部胸骨伤口能有效的控制感染且很少有远期的并发症，或许可以考虑用来当作第一线的治疗方法。

Some seven million years ago, this ancient ape species split into gorillas and the ancestors of humans and chimps, with both lineages infected by both species of lice. But Pediculus then fell extinct in its gorilla hosts, according to Dr. Reed's reconstruction, and Phthirus vanished from the chimp-human ancestor.

大概700万年前，古灵长类分裂成大猩猩，和黑猩猩和人类的共同祖先，两个物种都用有两种虱子，但大猩猩虱子在人类这一分支绝种，而黑猩猩虱子也在大猩猩身上绝种。

After being infected by PWN, the needle of 1-year-old pine seedlings with the lignified stem began to change to be bronzing or brown and wilted, which appeared at the phyllopodium and expanded to leaf apex, then the needles withered and died.

而茎已完全木质化的1年生松幼苗和4～5年生幼树离体枝感染松材线虫后，外部症状表现为发病叶褪绿、变红褐色或褐色且萎蔫，症状首先出现在叶基部，很快向叶尖扩展，至整个针叶枯萎死亡。

Transformed roots were inocuiated with resting spores of Plasmodiophora brassicae. On solid MS medium, the resting spores infected root haires but not root cortical tissues, and therefore no syndrome of club robt disease was found.

用根肿菌休眠孢子接种离体培养的转化根，结果发现，在固体培养基上，根肿菌只侵入根毛内，不侵入根皮层组织，因而不表现根肿病的任何症状。

Objective This study was designed to investigate the different status of provirus HIV DNA in non-progressor and progressor of HIV-1 infected persons.Methods HIV RNA, HIV DNA were detected with long-distance PCR,reverse-transcription PCR,Southern blot and molecular hybridization from plasma and peripheral blood mononuclear cells, using primers locating between long terminal repeats LTR(U5)-LTR and so on.

HIV是一种变异非常活跃的病毒，这种变异既有可能医疗增强病毒在宿主体内的适应性和生存，又有可能医疗使病毒复制受到阻碍，影响病毒在宿主体内的生存，为了更进一步掌握HIV变异规律，阐明HIV致病机理，我们用逆转录PCR、长片段PCR、Southern转印、分子杂交等对HIV感染无进展者和进展者HIV RNA、CD4细胞、HIV DNA及存在状态进行了研究。

Objective This study was designed to investigate the different status of provirus HIV DNA in non-progressor and progressor of HIV-1 infected persons.Methods HIV RNA, HIV DNA were detected with long-distance PCR,reverse-transcription PCR,Southern blot and molecular hybridization from plasma and peripheral blood mononuclear cells, using primers locating between long terminal repeats LTR(U5)-LTR and so on.

HIV是一种变异非常活跃的病毒，这种变异既有可能增强病毒在宿主体内的适应性和生存，又有可能使病毒复制受到阻碍，影响病毒在宿主体内的生存，为了更进一步掌握HIV变异规律，阐明HIV致病机理，我们用逆转录PCR、长片段PCR、Southern转印、分子杂交等对HIV感染无进展者和进展者HIV RNA、CD4细胞、HIV DNA及存在状态进行了研究。

According to epidemiological investigation, the occurance of the disease was related with breeding chickens, in which the IBV had played and important role in the infected chickens. The histopathological and ultrastructural lesions in proventricular, bursa of Febrcius, thymus, duodenum and kidney were studied.

流行病学调查表明：本病的发生与种鸡场有关，IBV在本病的发生过程中起到重要的作用，根据本病突出的病理变化为腺胃炎，我们将其称作传染性腺胃炎。

After restimulation in vitro with HTHV plus rhuIL-2, the splenocytes either from HTHV infected mice or from pEF-BOS/HTHV-NP plasmid DNA immunized mice were used as effectors in 4 h 51 Cr release assay.

分别取HTHV感染小鼠的脾细胞和pEF-BOS/HTHV-NP质粒DNA免疫小鼠的脾细胞，经体外抗原和IL-2再刺激诱导产生CTL效应细胞，进行4h 51 Cr释放实验。

Pigs have infected people with mixed-up viruses before, even triple whammies made of pig, bird and human flu genes, Richt's paper shows.

里希特的论文表明，猪早就把混合病毒传染给了人类，甚至用猪、禽和人类病毒基因的三重混合沉重地打击了人类。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。