查询词典 malignant

On the basis of observation on the denucleation process of mammalian erythroid cells in vito and in vitro, the present study was designed to investigate the regulatory effect and its mechanism of mammalian erythroblast cytoplasmic factor on malignant phenotype and gene expression of hybrid cells formed by cellular engineering fechnique of cell hybridization between the mouse plasmocytomas SP (2/0) cell line and rat erythroblasts.

本研究选用正常大鼠中幼、晚幼成红细胞与小鼠浆细胞瘤（SP2/0）细胞进行异种细胞杂交，研究哺乳动物红细胞胞质因子对肿瘤细胞恶性调控的效应及其机制。

Compared with classical cytotoxic T lymphocytes , NK cells are superior in the following aspects: NK cells are among the first cell types to be activated after intracellular pathogen stimuli, the activity of NK cells peaked between 1 to 3 days, retained during the first 7-10 days, and the T cells response emerged only after 7 days when the NK cell responses begin to decline; though comprising of only 10％-15％ of peripheral lymphocytes, NK cells mobilize most of the cell populations in a strong and high level response to different invasions, and act as key factors at early defense before a specific immune response could mount, while only certain clones were involved in T cell response; NK cells kill virus-infected or malignant transformed cells without pre-sensitization and without restriction by major histocompatibility antigen, which is usually a mechanism of immune escape to T cell recognition by virus-infected or tumor cells, thus NK cell in complementary with T cells play crucial roles in tumor and virus eradication.

NK细胞以其强大的细胞毒活性为特征，与细胞毒性T细胞相比，NK细胞具有如下特点：NK细胞虽然只占外周血淋巴细胞的10-15％，但是对刺激性因素产生应答的过程十分迅速，一次可以调动大多数细胞共同参与，而不是几个克隆的活化，免疫应答的强度高；病毒感染或恶性转化细胞的一个主要特征是细胞表达的MHCⅠ类分子下降或消失，并借助这一机制逃避特异性T细胞应答的识别，NK细胞介导的杀伤活性无需抗原刺激，不受MHCⅠ分子表达的限制，从而与T细胞应答互为补充发挥免疫防御的功能；NK细胞的免疫活性可以被多种细胞因子上调，其中IFNα，IL-2，IL-12，IL-15和IL-18具备更强的作用；NK细胞具有强大的细胞因子分泌功能，对于启动T细胞特异性应答必不可少。

Results Paranasal sinus malignant tumor root mainly in maxillary sinus 17 cases (54.8%), then ethmoid sinus 10 cases (32.3%), and frontal sinus 4 cases (12.9%).

结果：鼻窦恶性肿瘤多原发于上颌窦17例（54.8%），其次是筛窦10例（32.3%）和额窦4例（12.9%）。

A research platform was constructed for gene cloning and functional analysis in Eupatorium adenophorum in this study to provide a theoretical basis for the all-sided control of this malignant weed through the research in metabolic pathway related to allelochemical. By the study, we try to find out the coding gene of key enzyme which is related with the metabolism of allelochemical and clone some novel genes which can be used in agricultural production.

针对紫茎泽兰基因的克隆和功能分析建立了研究平台，通过开展紫茎泽兰的化感相关的代谢途径的研究，为这种恶性杂草的综合治理提供理论依据，以期能够找到调控化感物质代谢的关键酶的编码基因，发掘一些能够为农业生产所利用的新基因。

(1) VDT direction was exacter than DT calculated by radiologists measured diameter for diagnosis malignant nodule.

(1)使用LungCARE软件测量体积计算DT的方法判断SPN的良恶性优于测量直径的方法。

Malignant tumor was removed with exenteration of orbit.

恶性肿瘤则以眼剜除术将肿瘤切除。

He expression of the multidrug resistance gene product P170 and the PCNA (proliferating cell nuclear antigen) was analyzed in 67 bone malignant tumours, 15 normal bone tissues and 15 exostosis by S-P method immunohistochemistry.

作者采用S－P法免疫组织化学染色技术观察67例恶性骨肿瘤组织、15例正常骨组织、15例骨软骨瘤组织中多药耐药基因产物P糖蛋白（简称P170）、增殖细胞核抗原的表达情况。

Methods Semi -quantitative reverse transeriptase - polymerase chain reaction was used to examine the expression of BCRP gene in 62 cases of malignant hematologic diseases, BCRP/β2 - MG ratio was defined as BCRP expressible level.

方法应用半定量逆转录-聚合酶链反应，β2微球蛋白基因作内参照，以BCRP／β2-MG的比值作为BCRP基因的相对表达水平，检测62例恶性血液病BCRP基因的表达。

Primary atrial tumor has obvious characteristic on RT-3DE: All the atrial tumor display the same size of stereoimages as the tumor themselves. There is a clear boundary between the stereoimage of the myxoma and the atrial wall and there exists a short pedicle connecting the atrial myxoma to the atrial wall or the interatrial septum. The body of the atrial myxoma moves to and fro through the atrium and the atrioventricular valve with the contraction and relaxation of the heart with a fixative pedicle. Atrial myxoma leads to relative atrioventricular valve incompetence during systolic phase and relative atrioventricular valve stenosis during diastolic phase, but doesn't result in pathological changes of atrioventricular valve which restore to normal after exsection of the atrial myxoma. Malignant atrial tumor closely and extensively contact with atrial wall without obvious boundary, pedicle and movement with the contraction and relaxation of the heart.

所有心房肿瘤RT-3DE均实时显示与肿瘤大小相同的立体形态图像；心房黏液瘤立体形态图像与心房壁界限明显，都通过一短蒂与房间隔或心房壁相连，瘤体以蒂为固定点随心脏收缩、舒张在心房与房室瓣口之间往返运动；心房黏液瘤收缩期瘤体导致房室瓣相对关闭不全，舒张期瘤体导致房室瓣相对狭窄，但瘤体不引起房室瓣器质性病变，瘤体摘除后房室瓣功能即恢复正常；恶性心房肺瘤立体形态图像与心房壁关系密切，界限不明显，接触范围广泛，无蒂，瘤体不随心脏收缩、舒张运动。

It is effective and safe that temporary cardiac pacing treat malignant rapid ventricular arrhythmia caused by long interval dependent ventricular extrasystole .

临时心脏起搏救治长间歇依赖室早诱发的恶性快速性室性心律失常安全有效。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。