Zwitterion An ion with both a positive and a negative charge. 两性离子：既带有正电荷又带有负电荷的离子。
Why is alanine predominantly zwitterionic rather than completely uncharged at its pI? 为什么在等电点pH时，丙氨酸主要为兼性离子而非完全不解离的形式?
The cell wall can be destructed badly by zwitterionic porphyrin, when it was observed by AFM (Atomic Force Microscope). 同时我们还利用原子力显微镜(Atomic Force Microscope，AFM)观察到带有正负电荷的卟啉(16)对细胞壁的破坏作用明显强于只带负电荷的卟啉。
Synergisms of zwitterionic surfactant between the mixed surfactant system of SDS/ C12-C12 were investigated. 采用界面张力法考察了两性表面活性剂C12-C12在癸烷中与十二烷基硫酸钠(SDS)的协同作用。
Results The concentration of zwitterionic detergent CHAPS and reductant was decisive for obtaining good resolution of 2-DE pattern. 结果：两性离子去污剂CHAPS及还原剂的浓度是影响双向电泳图谱分辨力的重要因素；
The optimum sought super zwitterion polymer drilling liquid is with the aim,practicality,advantage and economy. 优选的超级两性离子聚合物钻井液具有针对性、实用性、先进性、经济性。
