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Wildlife Letters, Volume 2, Issue 3, Page 131-139, September 2024.Southern flying squirrels (flying squirrel; Glaucomys volans) frequently displace endangered red‐cockaded woodpeckers (RCW; Dryobates borealis) within forest partitions managed specifically for RCW cavities (“cluster partitions”). We found little to no evidence of differences in home range size and composition between flying squirrels within or outside
Robert T. Meyer +2 more
wiley +1 more source
野生动物学报, 1983 袋鼠产生澳洲。澳大利亚也以此为骄傲,您看,在他们的国徽上不是有一只站立的袋鼠吗?!这就足以说明澳洲人对袋鼠的推崇。美国也有袋鼠,但不像澳洲袋鼠那样大。袋鼠是胎生动物,但胎儿在子宫里的时间并不长。一般一胎怀一仔,怀孕期很短;就拿澳大利亚最大的大袋鼠来说,怀孕有5—6个星期,就分娩了;袋鼠的胚胎,在母兽的子宫内,还可以暂时停止发育,这当然是受到各方面条件的影响所致 ...
张万佛
doaj
Experimental study on effect of bone marrow mesenchymal stem cells on the function of severe fatty liver graft [PDF]
, 2015 第一章：大鼠骨髓间充质干细胞的分离、培养与鉴定 目的体外培养活性好、纯度高的骨髓间充质干细胞 方法采用密度梯度离心法分离培养骨髓间充质干细胞，采用流式细胞仪鉴定其表面抗原的表达情况，用成软骨试剂、成脂试剂诱导BMSCs分化成软骨细胞、脂肪细胞。 结果获得细胞具有明显的贴壁性，其细胞表面高表达CD44、CD90、CD29抗原分子，低表达CD45、CD34、CD11b抗原分子。成软骨诱导分化3周，BMSCs即可分化成软骨细胞，成脂诱导分化2周，即可分化成脂肪细胞。 结论密度梯度离心法可以获得活性好、纯度高 ...
范洪凯
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Conservation Biology, Volume 38, Issue 4, August 2024.Abstract Eradicating invasive predators from islands can result in substantial recovery of seabirds, but the mechanisms that drive population changes remain poorly understood. Meta‐analyses have recently revealed that immigration is surprisingly important to the recovery of philopatric seabirds, but it is not known whether dispersal and philopatry ...
Jeremy P. Bird +2 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2008 目的研究大鼠骨髓间充质干细胞的分离培养方法,建立大鼠肝脏缺血-再灌注损伤动物模型,观察骨髓间充质干细胞对大鼠肝脏缺血-再灌注损伤的修复作用。方法体外培养大鼠骨髓间充质干细胞,建立大鼠肝脏缺血-再灌注损伤的模型。动物模型制备后,将30只大鼠随机分为实验组（即尾静脉注入骨髓间充质干细胞0.5 ml,约106个）10只,阴性对照组（尾静脉注入生理盐水0.5 ml）10只。以正常大鼠作为空白对照组10只。结果各组大鼠于1周,2周,4周进行采血,取脏器进行各项指标检测。肝脏缺血 ...
孙晓艳 +4 more
doaj
Tributyltin and bisphenol A induce polycystic ovarian syndrome and its mechanisms involved [PDF]
, 2015 多囊卵巢综合征（polycysticovariansyndrome,PCOS）是以稀发排卵或无排卵、高雄激素或胰岛素抵抗、多囊卵巢为特征的内分泌紊乱的症候群，复杂且具有异质性，是婚育年龄妇女中最常见的内分泌紊乱疾病。PCOS的病因较为复杂，已有研究证明类雌激素化合物双酚A暴露（bisphenolA,BPA）与PCOS的发病有关，说明环境中的内分泌干扰物与PCOS发病存在一定的联系。 本研究以大鼠为实验动物模型，以三丁基锡（tributyltin,TBT）作为类雄激素化合物的典型代表，探究TBT（10ng/
杨志兵
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Conservation Biology, Volume 38, Issue 3, June 2024.Abstract Reintroduced populations are typically considered to progress through establishment, growth, and regulatory phases. However, most reintroduction programs do not monitor intensively enough to test this conceptual model. We studied population indices derived from track activity of 4 threatened species (greater bilby [Macrotis lagotis], burrowing
Katherine E. Moseby +3 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2002 【目的】研究实验性糖尿病大鼠肾组织2 型金属蛋白组织抑制物(TIMP2)mRNA 表达的变化及氯沙坦对它的 影响。【方法】纯种雄性Wistar 大鼠分为3 组, 正常对照组(11 只), 糖尿病大鼠无干预组(11 只), 糖尿病大鼠氯沙坦(血管紧 张素Ⅱ1 型受体阻断剂)干预组(9 只)。链脲佐菌素制备糖尿病大鼠模型。饲养18 周后取出肾以RT-PCR 检测TIMP2 mRNA 表达, 电镜检测大鼠肾小球基底膜厚度及系膜基质密度(系膜基质面积/ 系膜面积);收集24 h 尿测定尿白蛋白排泄 ...
宛 霞, 黄湖辉, 李劲高
doaj
Corneal neovascularization is allowed by the degradation and remodeling of typeⅠcollagen depended on Notch4-upregulated VEGFr3 expression [PDF]
, 2015 背景:角膜是无血管的高度透明的特殊组织，承担了眼三分之二的视觉功能。角膜新生血管（Cornealneovascularization，CNV)严重威胁视力，甚至导致失明，其机制未明，被认为是新形成的血管以出芽方式从角膜缘血管丛侵入无血管的角膜基质的过程。尽管近几十年来国内外已经针对CNV进行了大量的基础和临床研究，并取得了一些进展，然而因CNV发生的原因多种多样，发病机制非常复杂，到目前为止，仍没有发现一种共同的机制可以解释不同原因导致的CNV，也没有找到一种十分有效的方法治疗CNV。因此 ...
周丹
core
Veterinary Dermatology, Volume 35, Issue 3, Page 325-336, June 2024.Background – Norway spruce (Picea abies) resin‐based products are used in human medicine. A resin‐based otic rinse also could be useful in supportive care of canine otitis externa (COE), yet information on its antimicrobial effect against canine pathogens or ototoxicity is lacking.
Elina Aimo‐Koivisto +5 more
wiley +1 more source