Results 21 to 30 of about 157,921 (154)
血小板源性生长因子受体α突变型胃肠间质瘤的临床病理特征及预后分析
Zhongshan Daxue xuebao. Yixue kexue ban, 2021 目的探讨血小板源性生长因子受体α（PDGFRA）突变胃肠道间质瘤（GIST）中PDGFRA基因的突变状况、临床病理特征及预后因素，为生物靶向治疗提供依据。方法收集 2015 年1月至 2020 年11月期间中山大学肿瘤防治中心收治的经病理确诊为GIST，且原发肿瘤组织通过Sanger测序证实存在PDGFRA基因12或18号外显子突变的40例患者石蜡标本。采用免疫组化检测GIST中CD117、CD34、DOG-1及Ki-67表达情况。收集患者临床病理特征资料，回顾性分析影响 PDGFRA 突变型GIST ...
吴小延 +5 more
doaj
, 1980 髓鞘(图1,a)和轴突变化,是中枢神经系统损害中比较重要的一种病变。为了便于说明髓鞘和轴突变化的特征,先从其正常结构达起。 (一)髓鞘和轴突的正常结构 髓鞘是有髓神经纤维外面所见的鞘,其包在中央的神经纤维就是轴突 ...
封根泉, 孟繁荣
core +1 more source
高变异Y染色体短串联重复片段检验体系的建立及对北方汉族群体调查
Zhongshan Daxue xuebao. Yixue kexue ban, 2021 目的建立一套五色荧光复合扩增体系，并调查中国北方汉族遗传多态性和父子家系突变情况。方法根据文献筛查出在中国某一群体中突变率为高变异和快速变异的Y-STR基因座，建立一套五色荧光Y-STR复合扩增体系，计算在500个北方汉族无关男性个体中的基因多样性，观察每个样本的Y-STR单倍型，并对中国北方汉族500个父子对进行检测，统计父子间的突变情况。结果成功构建了包含21个Y-STR基因座复合扩增检验体系，在北方汉族群体中基因多态性在0.402 3～0.990 4之间，500个无关个体中未发现有相同的单倍型 ...
李运丽 +6 more
doaj
Psychometric framework for coexistence with large carnivores
Conservation Biology, EarlyView.Abstract Human–carnivore coexistence is essential for biodiversity conservation, yet measuring the attitudes and behaviors that support it remains methodologically challenging. We developed psychometric scales to assess willingness to coexist with carnivores and the underlying beliefs of this coexistence through an iterative expert elicitation process ...
Benjamin Ghasemi +14 more
wiley +1 more source
Conservation Biology, EarlyView.Abstract The International Union for Conservation of Nature (IUCN) Red List of Threatened Species is a critical measure of global aquatic and terrestrial biodiversity status. It is also the basis for the Red List Index, which tracks extinction risk over time.
Brittany Finucci +10 more
wiley +1 more source
Genomics‐informed management of ex situ populations
Conservation Biology, EarlyView.Abstract The European Association of Zoos and Aquariums (EAZA) manages insurance populations for hundreds of species through its EAZA ex situ programs (EEPs). EEPs help safeguard against extinction in the wild and provide source populations for genetic rescue programs.
Cock van Oosterhout +8 more
wiley +1 more source
International Journal of Applied Linguistics, EarlyView.ABSTRACT Multilingual students in Anglophone universities often operate in survival mode. While translanguaging supports learning, critical gaps remain in understanding how translanguaging pedagogies transform and sustain motivation in English‐dominant contexts.
Melissa Jufenna Slamet, Julie Choi
wiley +1 more source
, 2002 利用 Ofloxacin处理获得了纤细裸藻和中型裸藻无叶绿体突变株。吸收光谱测定和自荧光显微观察证明突变株无叶绿素合成 ,DAPI染色方法显示突变株细胞不存在质体 DNA,而无色的长变胞藻细胞中仍有可检测质体 DNA,说明二突变株质体已消失。 SDS ...
王江新,施之新,徐旭东
core +2 more sources
Coalition Breakdown and Subsystem Exit
Policy Studies Journal, EarlyView.ABSTRACT Why actors choose to work together (or not) to advance policy has been the central area of inquiry within the Advocacy Coalition Framework (ACF). Existing research has mainly emphasized the pathway towards coalition formation and evolution, underscoring the stable patterns of allies and opponents observable in policy processes over a decade or
Charlie F. Thompson
wiley +1 more source
The Making of the Right to Food: Tracing Food Policy Conflict and Negotiated Outcomes in Colombia
World Food Policy, Volume 12, Issue 2, November 2026.ABSTRACT The 2016 Peace Agreement between the Colombian Government and the FARC guerrilla group marked a historic step toward ending more than five decades of armed conflict. It also reshaped national food policy with lasting implications. During the negotiations, deep ideological divisions emerged between food sovereignty and food security, and these ...
Felipe Roa‐Clavijo
wiley +1 more source