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旨在通过组织学方法对鸡鼻腔结构组织特点以及鼻相关淋巴组织的分布进行系统研究。选用25只3日龄白来航鸡,分别于10、21、35和60日龄宰杀,分离整个鼻腔。经波恩液固定48 h后,一部分鼻腔组织沿矢状面和横断面切成连续断面,实体显微镜下观察解剖学结构;一部分用于组织学结构观察:固定后,10日龄雏鸡的鼻腔直接进行石蜡包埋,21日及以上日龄的鸡鼻腔先用甲酸脱钙再石蜡包埋。所有鼻腔沿纵轴选取5个横断面进行...
Ischemic preconditioning (PC) reduces myocardial infarction by a mechanism that involves opening of mitochondrial ATP-dependent potassium channels (mK ), reactive oxygen species (ROS), and possibly a...
Electroporation is the transitory structural perturbation of lipid bilayer membranes due to the application of high voltage pulses. Its application to the skin has been shown to increase transdermal ...
There is evidence that inducible nitric oxide synthase (iNOS) is activated at the acute phase of diabetes. We examined if selective inh ibitio n of iNOS by 1400W ( N -3-amino methyl -benz yl- acetami...
We measured mitochondrial redox potential as an index of mitoKATP channel opening in rabbit ventricular myocytes. The NO donor S-nitroso-N-acetyl- DL-penicillamine (SNAP, 0.1 to 1 mmol/L) oxidized t...
This study was designed to determine whether homocysteine also has acute effects on cardiac systolic function, because such actions may complement the previously described chronic effects on cardia...
Induction of endogenous antioxidants is one of the key molecular mechanisms of cell resistance to hypoxia/ischemia. The effect of severe hypoxia on the expression of cytosolic antioxidant thioredoxin...
The conditions under which subjects can program sequences of forearm extension-flexion movements on-line and those in which subjects are forced to preprogram was investigated. ...
Electric fields can induce pore formation and other struc-tural defects in lipid membranes, including cell mem-branes and skin [1,2]. Electroporation is widely used in the laboratory for gene transfe...
对从青海茶卡盐湖岸土样中分离到的1株生理较特殊的嗜碱放线菌YIM80305的生长pH范围,不同碱性物质KOH,K2CO3,NaOH,Na2CO3对其生长的影响,耐NaCl,KCl特性进行了研究.同时从形态,细胞壁类型,16SrDNA等方面进行了鉴定.结果发现YIM80305对Na+碱性物质有一定依赖性,对K+敏感,YIM80305可能是Streptomyces属的1个新种.

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