人 APT (Abnormal Prothrombin) E

异常凝血酶原单克隆抗体的制备与鉴定

凝血酶原是由肝脏合成的依赖维生素K的凝血因子。异常凝血酶原(Abnormal Prothrombin,APT)和凝血酶原的化学结构极其相似，区别在于：APT分子氨基端的特定位置上的谷氨酸残基未经羧基化，因而缺乏结合钙离子的结构基础，在一般凝血试验中无凝血活性。自从1984年Liebman等观察到原发性肝癌患者血浆APT水平显著升高，APT与肝癌的关系受到关注，其临床应用价值受到重视，测定方法不断改进。由于单克隆抗体建立的酶联法受外界因素影响小，可直接测出酶蛋白的含量，特异性强，灵敏

胞外基质

can thus be semi-quantitated.     ECM Cell ELISA (LTI) This is general protocol. Specific antibodies to integrins are added to pelleted cells and allowed to bind to the cell surface. The nonbound antibody is washed away and an enzyme conjugated

Detection of Cell Surface Dopamine Receptors

Dopamine receptors are a class of metabotropic G protein-coupled receptors. Plasma membrane expression is a key determinant of receptor signaling, and one that is regulated both by extra and intracellular cues. Abnormal dopamine receptor