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冠突伪尾柱虫小核对胞口结构稳定性的影响 被引量:6
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作者 金立培 金华中 《动物学报》 SCIE CAS CSCD 北大核心 2002年第2期258-263,共6页
在通过显微手术所建立的冠突伪尾柱虫 (Pseudourostylacristata)无小核系中 ,部分细胞因口围带翻领部小膜出现不同程度的缺损而导致畸形 ;在细胞生长静止期的群体中 ,口围带畸形率高达 5 0 %以上 ;对无小核系 6 0 0多个刚完成二分裂的... 在通过显微手术所建立的冠突伪尾柱虫 (Pseudourostylacristata)无小核系中 ,部分细胞因口围带翻领部小膜出现不同程度的缺损而导致畸形 ;在细胞生长静止期的群体中 ,口围带畸形率高达 5 0 %以上 ;对无小核系 6 0 0多个刚完成二分裂的前、后仔虫及 10 0 0多个生理改组末期的虫体进行蛋白银染色观察 ,除发现 4个二分裂仔虫和 3个生理改组后虫体的口围带异常外 ,绝大多数经过形态发生后的细胞都具有正常的胞口结构。另一方面 ,选择性培养实验进一步证明 ,口围带畸型产生于非形态发生期。由此可见 ,失去小核的细胞 ,同时也失去了胞口结构的稳定性。 展开更多
关键词 小核对 胞口结构 稳定性 腹毛类纤毛虫 冠突伪尾柱虫 无性分裂 器发生
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A Tri-Port MIMO Antenna Designed for Micro/Pico Cell Applications with Self-Decoupled Structure 被引量:1
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作者 WANG Han LIU Longsheng ZHANG Zhijun 《China Communications》 SCIE CSCD 2014年第11期1-6,共6页
A tri-port MIMO antenna designed for Micro/Pico-Cell application is proposed.It is based on printed elements with X-shaped arms,which are oriented to 0°,120° and240° in the azimuth plane.The arms of the... A tri-port MIMO antenna designed for Micro/Pico-Cell application is proposed.It is based on printed elements with X-shaped arms,which are oriented to 0°,120° and240° in the azimuth plane.The arms of these elements are connected,with which a selfdecoupled structure is formed.The mutual coupling between adjacent elements is below-15 dB.Meanwhile,it size is compact and bidirectional radiation patterns with around 4dBi Gain and 92° 3dB beam width is achieved,which can provide good pattern diversity and full azimuth coverage in real applications. 展开更多
关键词 MIMO antenna antenna diversity mutual coupling
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Molecular Characterization of China Human Rabies Vaccine Strains 被引量:2
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作者 Xiaoyan Tao Na Han +3 位作者 Zhenyang Guo Qing Tang Simon Rayner Guodong Liang 《Virologica Sinica》 SCIE CAS CSCD 2013年第2期116-123,共8页
To understand the molecular characteristics of China human rabies vaccine strains, we report the full-length genome of the aG strain and present a comprehensive analysis of this strain and almost all available lyssavi... To understand the molecular characteristics of China human rabies vaccine strains, we report the full-length genome of the aG strain and present a comprehensive analysis of this strain and almost all available lyssavirus genomes (58 strains) from GenBank (as of Jan 6, 2011). It is generally considered that the G protein plays a predominant role in determining the pathogenicity of the virus, to this end we predicted the tertiary structure of the G protein of aG strain, CTN 181 strain and wild type strain HN 10 based on the crystal structure of Vesicular stomatitis virus (VSV) G. The predicted RABV G structure has a similar topology to VSV G and the ectodomain can be divided into 4 distinct domains DI - DIV. By mapping the characterized mutations to this structure between China vaccine strains and their close street strains, we speculate that the G303(P-H) mutations of CTN181 and HN10 causing D II 3D change may be associated with the attenuated virulence in both strains. Specifically, the two signature mutations (G165P and G231P) in the aG strain are withinβsheets, suggesting that both sites are of structural importance. 展开更多
关键词 Rabies virus LYSSAVIRUS GENOME GLYCOPROTEIN
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