排序方式: 共有63条查询结果,搜索用时 281 毫秒
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BANG LIU GENG LIN JIN SHU HONG ZHAO MEI YU TONG AN XIONG ZHONG ZHEN PENG Km LILaboratory of Molecular Biology Animal Breeding School of Animal Science Veterinary Medicine Huazhong Agricultural University Wuhan China 《Cell research》2002,(Z2)
Well-spread meiotic pachytene bivalents were obtained by using the prolonged hypotonic treatment combined with high chloroform Carnory's fixative solution from cells of the testes of domestic pigs. Comparison in the division index and length of pachytene bivalents with metaphase chromosomes showed that those of the former are 5 times higher and 3.42(1.87-5.98) times longer than those of the latter. Comparative studies on chromomere maps of bivalents and mitotic chromosomal G-bands were conducted by using the chromosome 12 as a example. Sex vesicle and various shapes of synaptic sex chromosomes have been observed. Two-color PRimed IN Situ (PRINS) labeling has been conducted successfully on pachytene bivalents of pigs. 相似文献
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Suppression of angiotensin Ⅱ stimulated responses in aortic vascular smooth muscle cells of experimental cirrhotic rats 总被引:1,自引:0,他引:1
ZHANG RU GUO LIANG WANG PI LI ZHANG YING XIONG WEN BO ZHANG XING PENG WANG DE LING YIN QING JING 《Cell research》1999,(2)
INTRODUCTIONLivercirrhosisisoftencomplicatedbyhyperdynamiccirculation,whichischaracterizedbyadecreaseinarterialbloodpressureandperipheralvascularresistanceandanincreaseincardiacoutputandsplanchnicbloodnow[1].Thesehaemodynamicdisturbancesareproposedtocontributetothedevelopmelltofportalhypertension,retentionofsodiumandwater,ascitesformationandcorrelatewithprognosisoflivercirrhosis[2].Ithasbeensuggestedthatprimaryarterialvasodilationmayinducethishyperdynamiccirculation[3].Buttheunderlyingmec… 相似文献
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Deoxyribozymes inhibit the expression ofperiod1 genein vitro 总被引:1,自引:0,他引:1
ZHOU Wei WANG Yueqi LIU Yanyou PENG Wenzhen XIAO Jing ZHU Bin & WANG Zhengrong . Biomedical Engineering Department School of West China Basic Forensic Science Sichuan University Chengdu Chin . Molecular Biology Biology Chemistry Department School of West China Basic Forensic Science Sichuan Univers Chengdu China 《中国科学:生命科学英文版》2005,48(3):195-201
Throughout biology, a broad range of biochemical and physiological processes oscillate with approxi-mately 24-h rhythms or circadian rhythms as synchro-nizing with the rhythmic environment (day/night cy-cles, seasons, etc.). The circadian rhythms are under the control of an endogenous oscillator, the circadian clock[1]. Period (per), the first genetically identified circadian mutant[2], is assumed to be a key molecule in the regulation and functioning of the mammalian cir-cadian clock which is… 相似文献
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红花玉兰等5个玉兰种花粉形态观察及分类学意义 总被引:2,自引:0,他引:2
芮飞燕 马履一 彭祚登 贺随超 王希群 RUI Fei-Yan MA Lü-Yi PENG Zuo-Deng HE Sui-Chao WANG Xi-Qun 《植物研究》2007,27(4):393-397
通过对红花玉兰(Magnolia wufengensis L. Y. Ma et L. R. Wang)等5个玉兰种的花粉的光学显微镜和扫描电子显微镜观察拍照,测量光学显微镜下的花粉大小并对其进行统计学分析。结果表明:光学显微镜下,木兰属5个种的花粉均呈现椭圆形或近圆形,各种之间大小、形状方面有较大差异,种内部也存在不同程度的差异;扫描电子显微镜下,各种花粉均为舟形,且具有闭合、长及两端的远极萌发单沟等一致特征,花粉表面纹饰、突起等特征在种内部比较稳定,不同种之间差异明显,可以为木兰属植物种的划分提供比较准确的依据。 相似文献
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LATE JURASSIC PROTOSUCHIAN SICHUANOSUCHUS HUIDONGENSIS (ARCHOSAURIA: CROCODYLIFORMES) FROM ZIGONG, SICHUAN, CHINA 总被引:1,自引:1,他引:0
PENG Guanghao 《古脊椎动物学报》1996,(4)
AddihonaldiagnodsInternasialbarformedbypreInakilla;afaintmtCreSondorsalsurfaceoffrontalalongposterodorsalcomeroforbUpostorbitalcoInPleteyex-dudedfr0minfrateInporalfenestra;lengthofSymhysisbothanitSwidth;ventraledgeofangularexpandedtransverSeytoforml0ngitUdinalmwhalandlateralridges;denhckiinhpedgeofcheekteethlagrthanthoseinanteriorandposterioredges'RrmarksClosephylCgeneticrelahonshipsofShuhaandAstUngOSUchusfromtheInteJurassicandEariyCretaanusofthenorthernChinaareindicatalbythefollowing… 相似文献
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小麦外源DNA导入及转化的初步研究 总被引:10,自引:0,他引:10
采用改进的酚-RNA酶法从野生一粒、野生二粒、提莫菲维和波兰小麦幼苗中提取总DNA,用子房注射法和花粉管途径导入云南铁壳麦1号和湖北生产上应用的鄂恩1号小麦,发现D1代出现供体性状或新的变异性状,有些变异性能遗传到后代。 相似文献
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易自力;徐乃瑜;田现斌 《武汉植物学研究》1991,9(3):215-218
本文以普通小麦中国春为对照,对(节节麦)中国春、(卵圆山羊草)中国春和(无芒山羊草)中国春3种同核异质杂种小麦的核型进行了分析比较,结果表明:它们的核型都与对照的一致,其核型公式均为2n=6x=42=36m+6sm,均属1A核型,从而证明了异源细胞质对普通小麦核型无明显影响。 相似文献
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LIU Jin LI Guangtao PENG Xiaozhong LIU Bingyan YIN Bin TAN Xinyu FAN Ming FAN Wenhong QIANG Boqin & YUAN Jiangang National Laboratory of Medical Molecular Biology Institute of Basic Medical Sciences Chinese Academy of Medical Sciences School of Basic Medicine Peking Union Medical College National Human Genome North Center Beijing China Department of Neuro- biology Institute of Basic Medical Science Taiping Road Beijing China 《中国科学:生命科学英文版》2004,47(2):158-164
~~The cloning and preliminarily functional analysis of the human neurotrimin gene~~ 相似文献