CD28分子存在于大多数T细胞表面，被认为是一种T细胞特有的表面分子。T细胞对抗原的反应性主要通过CD3/TCR复合物介导，但也有赖于T细胞表面其他分子的协同。
CD28分子存在于大多数T细胞表面，被认为是一种T细胞特有的表面分子。T 细胞可通过 CD3/TCR、CD2 和 CD28 等多种途径被有效激活。从外周血、骨髓或脐血中分离出的单个核细胞在 CD3、CD28 单克隆抗体和多种细胞因子存在的条件下，经过一定时间培养可以获得具有肿瘤细胞杀伤活性的 CIK（Cytokine-inducedKiller）细胞。
表达宿主（Expression host）
杂交瘤细胞
浓度（Concentration） 1mg/mL
使用说明（Instructions）
可溶法： 推荐使用浓度为500ng/ml，在该浓度条件下细胞可获得充分的活化和刺激，细胞扩增倍数和最终的CD3+CD56+双阳率有明显提高。
包被法： 10mL PBS缓冲液（5ug/mL anti-human CD28）铺T75方瓶置于4℃过夜。使用前去除PBS缓冲液，生理盐水洗涤三次。
存 储：2-8℃可保存3个月，长期存储置于-20℃或-80℃保存，建议开封后分装成小份，避免反复冻融。
| 溶解性（25°C） | PBS |
| 储存条件 | 2-8°C for 3 months, long-term storage at -20°C or -80°C |
| 运输方式 | 冰袋运输，根据产品的不同，可能会有相应调整。 |
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