无细胞的

The results indicated that chromosome counting was the most reliable and precise method, however, it was cumbersome and required skilled cytological techniques; The chromocenter size, heterochromatin number, chroloplast number of guard cell and certain plant morphological characteristics are simple and practical methods for ploidydetermination but with some shortages.

结果表明：对体细胞染色体的直接计数法是最可靠的方法，但费时、难度大；叶片气孔大小与倍性无显著相关性；保卫细胞叶绿体数目、体细胞染色中心大小以及异染色质个数与黄瓜倍性密切相关，是简单、快速而有效的倍性鉴定方法；植株的形态学观察也能间接确定植株倍性，但鉴定时期偏晚，精确性较差。

Lyar was found to interact with Nucleolin, another important nucleolar protein.

Lyar表达水平的的下调能导致ES细胞中Nucleolin的蛋白水平明显下降，而mRNA水平无明显变化。

Results: The results showed that NOS positive neurons existed in all the auditory afferent nucleus while NOS negative neu-rons existed in the superior olivary nucleus. Most of NOS positive neurons in CNC were located in the posterior ventral cochlear nu-cleus ,which were round or oval bipolar neurons. NOS positive neurons were also found in potine widely.

结果：在脑桥的各级听觉传入核团，均有NOS阳性神经元，而上橄榄复合体无NOS阳性神经元；耳蜗核内NOS阳性神经元，主要集中在后腹侧核，为圆形或椭圆型双极神经元；下丘的臂内侧核NOS阳性神经元呈小的、圆形细胞。

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。

Two types of pyrophosphatase are present in plant tissues: soluble one in cytoplasm and insoluble one on the vacuolar membrane.

植物组织中有两种类型的焦磷酸酶，一类是细胞质中可溶性的无机焦磷酸酶，另一类是与细胞液泡膜结合的不可溶性焦磷酸酶(vacuolar PPase，V-PPase)。

On the other hand, folacin deficiency doesn't affect cell proliferation, cycle, aoptosis and methyl status of P53 exons 6, 7 and 8 in the MCF-7 cell line.

叶酸缺乏对乳腺癌细胞株MCF-7的生长及各细胞周期的分布、凋亡率、P53外显子6、7和8的DNA甲基化程度无显著影响。

In clacium free solution, we also show α-latrotoxin induce quantal release using carbon fiber electrode.

与之相对应的是，在无Ca~(2+)条件下，通过碳纤维电极的检测发现α-latrotoxin可以在β细胞上引发一定的量子释放。

ALA-PDT alleviated GVHD following allo-BMT and preserved GVL in ALL mice One-way mixed lymphocytes predisposed with ALA-PDT and marrow cells from the donors were infused into ALL mice. The body weight increase, haematogenesis recovery and survival time were better then all the other groups.

ALA-PDT减轻急性淋巴细胞白血病(acute lymphoblastic leukemia，ALL)小鼠同种异基因骨髓移植后GVHD反应，并且保留了GVL效应将经过ALA-PDT处理过的单向混合淋巴细胞联合供鼠的骨髓细胞输注给ALL小鼠体内，ALL受鼠的体重增长情况、造血功能恢复情况及无病生存时间等指标明显好于对照组。

"Here we have two variants that have no impact on pigmentation and only affect the risk of basal cell carcinoma," Kari Stefansson, Decode's chief executive, who led the study, said in a telephone interview.

解码基因机构主任、这项研究的领导人凯里-斯蒂芬森Kari Stefansson）在一次电话采访中说：我们发现的这两个基因变异对色素沉着并无作用，仅仅影响患皮肤基底细胞癌的风险。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。