Vasilescu V, Dinu A, Aricescu I, Chirieri-Kovács E
Biochim Biophys Acta. 1986 Apr 2;849(1):172-4. doi: 10.1016/0005-2728(86)90108-8.
Measurements were made on the conductivity of digitonin extracts of frog rhodopsin with and without previous light exposure. The light-dark difference in conductivity is observed at low concentrations of rhodopsin and detergent.