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21.
长江流域水牛血液蛋白多态性研究 总被引:12,自引:1,他引:11
史荣仙 付茂忠 赖松家 左福元 董学虎 高蓉 吴东江 陈润文 李克勇 赵廷述 余超群 黄铁夫 蒋长宇SHI Rong-Xian FU Mao-Zhong LAI Song-Jia ZUO Fu-Yuan DONG Xue-Hu GAO Rong WU Dong-Jiang CHEN Run-Wen LI Ke-Yong ZHAO Ting-Shu YU Chao-Qun HUANG Ti-Fu JIANG Chang-Yu 《遗传》1995,17(1):7-11
采集长江流域德昌、涪陵、江汉、滨湖和海子5个水牛地方品种共416 头牛的血样。电泳检测血红蛋白、血清运铁蛋白多态性,估算各等位基因频率及基因型频率,根据Hb及Tf两个位点的基因频率进行聚类分析。结果表明,5个水牛地方品种间遗传变异较小,其亲缘关系较近。 相似文献
22.
王应太 王兆才 杨艳丽 黄飞飞 廖世秀 蒋瑞英 王怀立WANG Ying-Tai WANG Zhao-Cai YANG Yan-Li HUANG Fei-Fei LIAO Shi-Xiu JIANG Rui-YingWANG Huai-Li 《遗传》1997,19(1):28-29
本文采用高分辨染色体技术,对一例猫叫综合征患儿及其家系进行了分析,结
果提示,猫叫综合征染色体关键片段位于5p15.3→5pter。 相似文献
23.
YAN YiWu LIU Qiang LI Ning DU JianChao LI Xiao LI Chang JIN NingYi JIANG ChengYu 《中国科学:生命科学英文版》2015,58(2):208-211,1,2
<正>Dear Editor,Since the first recognized case of human infection with avian influenza H5N1 virus in 1997,the worldwide spread and re-emergence of this highly pathogenic influenza virus have led to 694 human infection cases.Of these cases,402died from 2003 to 2015(http://www.who.int/influenza/human_animal_interface/EN_GIP_20150106CumulativeNumber H5N1cases.pdf?ua=1),with a morbidity rate of 相似文献
24.
The protein prenylation is one of the essential post-translational protein modifications, which extensively exists in the eukaryocyte. It includes protein farnesylation and geranylgeranylation, using farnesyl pyrophosphate(FPP) or geranylgeranyl pyrophosphate(GGPP) as the substrate, respectively. The prenylation occurs by covalent addition of these two types of isoprenoids to cysteine residues at or near the carboxyl terminus of the proteins that possess Caa X motif, such as Ras small GTPase family. The attachment of hydrophobic prenyl groups can anchor the proteins to intracellular membranes and trigger downstream cell signaling pathway. Geranylgeranyl biphosphate synthase(GGPPS) catalyzes the synthesis of 20-carbon GGPP from 15-carbon FPP. The abnormal expression of this enzyme will affect the relative content of FPP and GGPP, and thus disrupts the balance between protein farnesylation and geranylgeranylation, which participates into various aspects of cellular physiology and pathology. In this paper, we mainly review the property of this important protein post-translational modification and research progress in its regulation of cigarette smoke induced pulmonary disease, adipocyte insulin sensitivity, the inflammation response of Sertoli cells, the hepatic lipogenesis and the cardiac hypertrophy. 相似文献
25.
Denitrificationis the ability of bacteria to use nitro-gen oxides(NO3-and NO2-)as electron acceptorsto pro-duce gaseous nitrogen,mainly N2.The oxidation of or-ganic material coupled to reduction of oxygen leads to ahigher energy yield than reduction of nitrate.Oxygen iscommonly accepted to be the first choice as electron ac-ceptor[1].Therefore,denitrifying is generally thought toonly occur under almost anaerobic conditions.Anefficientwastewater treatment toremove nitrogen components relieson… 相似文献
26.
云南傣族、景颇族、阿昌族PTC尝味能力的测定 总被引:2,自引:0,他引:2
黎曼侬 周增娣 姜竹春 张卫红 司宝敏LI Man-Nong ZHOU Zeng-Di JIANG Zhu-Chun ZHANG Wei-Hong SI Bao-Min 《遗传》1993,15(2):1-4
用阈值法对云南德宏州的傣族、景颇族、阿昌族2327人进行了苯硫脲(PTC)味阈的测定,结果表明:不同民族尝味阈值差异高度显著(P<0.01),不同民族的味盲率有高度显著性差异,三个民族总计,男女尝味阈值差异高度显著,味盲率差异高度显著;傣族、景颇族和阿昌族中,男女尝味阈值均有高度显著差异;傣族、景颇族的男女性别的味盲率间有高度显者性差异,阿昌族性别味盲率间无显著性差异(P<0.05);三个民族总计,少年与成年组尝味阈值间有高度显著性差异,而味盲率间无显著性差异。傣、景二个民族不同年龄的尝味阈值间有高度显著性差异,阿昌族年龄的尝味阈值间无显著性差异;傣、景民族年龄间的味盲率无显著性差异,而阿昌族味盲率有显著性差异(0.05>P>0.01)。 相似文献
27.
白暨豚的舌 总被引:2,自引:0,他引:2
在现代生存的四类淡水豚中,恒河豚(Platanista gangetica)和拉河豚(Pontoporia blain-villei)的舌已有详文报道(Arvy和Pilleri,1970;Yamasaki等,1976a)。亚河豚(Iniageoffrend)的舌也在Yamasaki的文章中作为和上述二种淡水豚舌的比较而述及。白暨豚(Liptes vexillifer)的舌除陈宜瑜等(1975)曾提及外,迄今未有其他报道。鉴此,作者对白暨豚的舌作了解剖学和组织学的观察,现将研究结果报告如下: 白暨豚舌的标本取自幼体、亚成体、成体和老年个体等七头个体。为了比较,还收集了亚河豚、其它海豚类和陆生哺乳类的舌。用10%甲醛固定保存,各项量度根据固定标本测量。白暨豚舌的外形描述以NNC 7909号标本为主,以其它个体的观察为辅。其组 相似文献
28.
29.
Effects of ELF magnetic fields on protein expression profile of human breast cancer cell MCF7 总被引:3,自引:0,他引:3
LI Han ZENG Qunli WENG Yu LU Deqiang JIANG Huai & XU Zhengping . Bioelectromagnetics Laboratory Zhejiang University Hangzhou China . Research Center for Environmental Genomics Zhejiang University School of Medicine Hangzhou China 《中国科学:生命科学英文版》2005,48(5):506-514
A case-control study in 1979 on electrical wiring configurations and childhood leukemia had stimulated interest in the issue that extremely low frequency magnetic fields (ELF MF) may have harmful biologi-cal effects especially on the incidence of human can-cer[1]. Since then, a large number of studies have been conducted to follow up this important result[2]. The majority of these studies indicate a weak association between exposure to 50―60 Hz ELF MF and the in-cidence of cancer; however… 相似文献
30.
冯耀东 高立 苟德明 蒋达和 毛歆 李文鑫FENG Yao-dong GAO Li GOU De-ming JIANG Da-he MAO Xin LI Wen-xin 《遗传》2000,22(6):361-364
采用原位杂交和RNA点杂交方法,观察了一种新的端粒相关锌指基因TASL30在早期人胚与50种器官组织中的mRNA表达。结果表明,TASL30基因在早期人胚神经管中有明显表达,其中在神经管的头端表达最强,而在人的50种器官组织中均未检测到该基因的明显表达。另外通过G-显带和染色体原位杂交,将TASL30基因定位于人染色体12q24~qter。
Abstract:By means of in situ hybridization and RNA dot blot,mRNA expression of a telomereic-associated zinc finger gene(TASL30 )was observed.The results showed that TASL30 gene was expressed in significant amount in neural tube of early human embryo and the cephalic expression level was the highest,but none of recognizable positive signal was detected in 50 human tissues.By G-banding and chromosome in situ hybridization,TASL30 gene was located in chromosome 12q24~qter. 相似文献