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cainiaodui

新虫 (小有名气)

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Movement of molecules across vessel walls occurs by diffusion and convection. Diffusion is governed by concentration gradients across the vessel wall, whereas convection is governed by pressure gradients. To test whether the pressure gradient across the vascular wall improves the penetration of large molecules, we injected fluorescently-labeled BSA i.v. into MCaIV-tumor-bearing mice and observed the pattern of BSA extravasation. We also identified functional blood vessels using biotinylated lectin. Quantitative analysis confirmed that DC101 produced a significantly deeper penetration of BSA molecules into the tumor
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jurkat.1640

至尊木虫 (文坛精英)

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RXMCDM: 金币+1 2014-05-13 14:06:09
cainiaodui(RXMCDM代发): 金币+1 2014-06-13 15:33:42
分子通过扩散和运输方式通过血管壁。扩散受血管壁两侧的浓度差控制,而运输受压力差控制。为了检测血管壁处压力差是否促进大分子的渗透,我们静脉注射荧光标记的BSA至MCaIV肿瘤小鼠并观察BSA的溢出方式。我们也使用生物素标记的血凝素鉴定血管功能。定量分析证明:DC101使BSA分子更深地穿透到肿瘤中。
3楼2014-05-13 11:29:36
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小土totoo

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真强必胜: 金币+1, ok 2014-05-07 20:55:56
cainiaodui(RXMCDM代发): 金币+1 2014-06-13 15:33:31
跨血管壁的分子运动主要通过扩散或是对流。扩散的发生依赖于浓度梯度,然而对流依赖于压力梯度。为了证明血管两侧的血压是否促进分子的大量渗透,我们在 MCaIV-tumor-bearing 小鼠体内静脉注射用荧光标记的BSA,并观察BSA的渗出模式。我们也使用生物素标记的凝集素确定血管壁的功能。大量实验分析证实,DC101能使BSA分子更深入地渗透至肿瘤中。
2楼2014-05-07 16:55:32
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