Brandt P W, Freeman A R
Science. 1967 Feb 3;155(3762):582-5. doi: 10.1126/science.155.3762.582.
Inducers of pinocytosis in amoeba cause as much as a 50-fold decrease in the electrical resistance of the plasma membrane prior to the formation of the typical tunnels and vacuoles. In this state the thickness of the electron-transparent core or lamella of the unit membrane is at least twice as thick as that of the control. The changes in structure and resistance as well as the induction of pinocytosis are dependent on the initial external concentration of calcium. These changes are rapidly reversed when the concentration of calcium in the external medium is increased.
变形虫胞饮作用的诱导剂在典型的通道和液泡形成之前，会使质膜的电阻降低多达50倍。在这种状态下，单位膜的电子透明核心或片层的厚度至少是对照的两倍。结构和电阻的变化以及胞饮作用的诱导取决于外部钙的初始浓度。当外部介质中钙的浓度增加时，这些变化会迅速逆转。
