Liposome formulations can be broadly divided into cationic, anionic and neutral subtypes. Charged liposomes are used in many different types of studies such as, blood complement studies, gene transfer studies and other biomedical applications to name a few. Cellsome® liposomes made from cationic PEGylated lipids provide certain benefits. Cationic liposomes interact with negatively charged glycoproteins (i.e. mucins) on the cell surface, thereby increasing the affinity and residence time with the target cells, resulting in increased drug delivery. Conventional liposomal formulations reduced the toxicity of compounds in vivo, through modifying pharmacokinetics and biodistribution to enhance drug delivery to diseased tissue in comparison to free drug. However, the delivery system was prone to rapid elimination from the bloodstream, therefore limiting its therapeutic efficacy. To improve liposome stability and enhance their circulation times in the blood, a sterically-stabilized, hydrophilic polymer, polyethylene glycol (PEG), has been shown to be the optimal choice for obtaining sterically-stabilized liposomes. Using a Cationic Liposome with PEG will protect the liposomes from circulating proteins, improving their plasma clearance and enhancing their therapeutic effects.
The two products provided that are made from Cationic PEGylated Lipids provided here consist of either DSPC:Chol:DSTAP:DSPE-PEG(2000) (60:30:5:5 molar ratio) or DOPC:Chol:DOTAP:DOPE-PEG(2000) (60:30:5:5 molar ratio).
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用双氧水去除过氧化物酶时，我是自己配的3%双氧水滴到片上而非将片浸入双氧水，这样可否？
用博士德的DAB染色，配制方法为：1mlH20中加入DAB、H2O2、TBS各一滴，我配制的时候发现将DAB加入H20时很容易沉淀，要震荡才能混匀，且将配好的DAB滴到玻片上时，DAB会结为很小块的微颗粒悬浮在液体中但并不染色，是否DAB有问题？
现在打算换中衫的试剂盒，代理商说中衫的试剂盒包括了二抗和DAB，想请教一下该试剂盒的具体内容有些什么？
万分感谢！
上海好多的供应商的，具体还是看你选择了，其实试剂盒产品都差不多，什么远慕生物，古朵生物...好多的额
