Voltage clamp studies of fertilization in sea urchin eggs. II. Current patterns in relation to sperm entry, nonentry, and activation.

@article{Lynn1988VoltageCS,
  title={Voltage clamp studies of fertilization in sea urchin eggs. II. Current patterns in relation to sperm entry, nonentry, and activation.},
  author={J W Lynn and David H. McCulloh and Eggers Chambers},
  journal={Developmental biology},
  year={1988},
  volume={128 2},
  pages={305-23}
}
Following attachment of a sperm to the surface of a sea urchin egg clamped at a membrane potential (Vm) more positive than +17 mV, no changes in membrane conductance can be detected, the sperm does not enter egg, and no morphological changes can be detected. At Vm from +17 to -100 mV three characteristically different types of current profiles are observed: Type I are activation currents in eggs penetrated by a sperm. These have three phases, which occur in all eggs clamped at Vm from +17 to… CONTINUE READING

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