Results 21 to 30 of about 1,323 (116)
, 2018 鱼类的染色体核型分析是鱼类遗传学研究的基础,作为我国重要养殖品种的双斑东方鲀(Takifugu bimaculatus)尚未发现有染色体核型的相关报道.采用体内注射植物血球凝集素(PHA)及秋水仙素法制备了双斑东方鲀头肾组织染色体标本并分析其核型.结果表明,双斑东方鲀二倍体染色体数为2n=44,其染色体臂数为NF=62,核型公式为12m+6sm+26t.通过比较分析推测2n=44应该是东方鲀属的染色体基础核型,而其染色体核型的高度保守可能是东方鲀属鱼类易于发生种间杂交的主要原因之一 ...
刘巧红, 尤颖哲, 陈军, 陈武各
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International Journal of Applied Linguistics, Volume 36, Issue 1, Page 522-539, February 2026.ABSTRACT This paper examines the features of metadiscourse across different teacher moves in university linguistics classroom discourse and the teaching strategies reflected in its use. The results reveal that teachers employ diverse metadiscourse during classroom interactions to support student reasoning.
Jingjie Li, Wenjie Hu
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2017 目的探讨慢性粒细胞白血病（CML）中细胞遗传学的特点和不同病期染色体核型演变的特点及其意义。方法采用骨髓直接法和短期培养法制备染色体,应用R显带技术对211例CML患者进行染色体核型分析。结果Ph+患者占91.5%,Ph-患者占5.7%。在Ph+患者中,93.8%为典型Ph染色体阳性,6.2%为变异型Ph染色体阳性。19.7%的患者发生染色体核型演变。急变期、加速期和慢性期染色体核型演变的发生率分别为66.7%、50%、2.1%。结论染色体核型分析对慢粒的诊断及预后具有重要的意义,CML病程中定期 ...
饶若 +4 more
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Zhongguo shiyan zhenduanxue, 2020 目的研究不孕不育患者染色体核型特点并分析其临床特征。方法以在本院2013年8月-2018年8月就诊的242例不孕不育患者为研究对象,采集患者外周血进行淋巴细胞培养,制备染色体标本,进行染色体核型分析。结果 242例不孕不育患者中染色体核型异常有54例,其中染色体结构异常8例,占总不孕不育人数的3.31%;数量异常1例,占总不孕不育人数的0.41%;多态性核型45例,占总不孕不育人数的18.60%。结论染色体数目或结构异常是导致不孕不育的重要原因,因此染色体核型测定能深入了解不孕不育原因 ...
程庆秋 +5 more
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Design, synthesis and preliminary bio-evaluation of progestrone receptor targeting probes for breast cancer imaging with PET [PDF]
, 2016 乳腺癌是严重威胁女性健康的疾病，它的早期诊断能够有效的降低病人的死亡率。孕激素受体属于核受体超家族，有PRA和PRB两种亚型，在调节和控制卵巢，子宫和乳腺的功能方面有重要作用。研究表明，在雌激素受体阳性（ER+）的乳腺癌病人中，PR的表达与否不会对病人接受他莫西芬治疗的疗效产生影响。但是在雌激素受体表达阴性（ER-）的乳腺癌病人中，病人接受他莫西芬治疗的疗效依赖于PR的表达。因此，监测PR的表达对乳腺癌的早期诊断和ER-/PR+病人的治疗都是很重要的。PET的灵敏度高，空间分辨率好，安全性也较好 ...
吴晓伟
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International Journal of Applied Linguistics, Volume 36, Issue 1, Page 509-521, February 2026.ABSTRACT Multimodal reading skills are essential for 21st‐century students to interpret and navigate information across various modalities on the Internet and in multimedia environments. While previous studies have delved into the effects of lower‐ and higher‐level cognitive skills on traditional reading comprehension, which involves solely written ...
Yaping Liu, Choo Mui Cheong, Xinhua Zhu
wiley +1 more source
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT The B2 phase is a critical strengthening constituent in AlxFeCoCrNi high‐entropy alloys (HEAs), and introducing such phases onto the nanoscale cellular substructures is an ideal pathway for strengthening alloys fabricated by laser powder bed fusion (L‐PBF).
Xiangjian Zhu +5 more
wiley +1 more source
Establishment and Application of A Novel Method for Detecting MLL Fusion Genes of Acute Leukemia [PDF]
, 2012 共同通讯作者 :李庆阁，教授．电话 :(0592)2187363． E-mail: qgli@ xmu.edu.cn ;鹿全意，教授、主任医师．电话 :(0592)－2292032E-mail:luquanyi@ xmu.edu.cn[中文文摘]本研究旨在建立一种快速检测急性白血病中常见MLL融合基因的方法。针对10种最常见的MLL融合基因,首先通过检索文献及数据库,确定已报道的所有融合形式并据此设计引物和探针。其次,以构建的16个阳性质粒和阴性细胞系建立和优化多重实时PCR检测体系。最后 ...
李庆阁 +4 more
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US Foreign Policy and the Gulf States: Changing Dynamics in a Multipolar World
World Affairs, Volume 188, Issue 4, Winter 2025.ABSTRACT This article focuses on US foreign policy toward the Gulf from Obama's Pivot to Asia to the initial period of the second Trump administration. It situates the role of the US within the broader context of the global energy transition and the Gulf states as geopolitical actors in a multipolar world order.
Steven Wright
wiley +1 more source
染色体分析联合骨髓活检诊断无明显病态造血的早期骨髓增生异常综合征
Zhongguo shiyan zhenduanxue, 2009 目的评价染色体核型分析联合骨髓活检在诊断无明显病态造血的早期骨髓增生异常综合征（MDS）中的价值。方法回顾性分析9例有克隆性染色体异常的无病态造血改变的早期MDS的染色体核型和骨髓活检组织切片特征。结果9例MDS患者中,8例为轻度的异常核型,1例为复杂核型。4例有+8异常,2例有13、20号染色体异常,9、10、11、12、14号染色体受累各1例。骨髓切片CD61免疫组化示2例有微小巨核阳性,检出1例典型髓系幼稚前体细胞异常定位（ALIP）,3例患者骨髓切片CD34 ...
谢守军, 王娜
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