[Relationship between calcium balance and electrogenesis of perfused rat liver]

The high level of intratissue electric cooperation enables to detect tissue potentials with microelectrodes thick enough to destroy individual cells. Nevertheless, in ordinary perfused rat liver, these "cooperative potentials" (CP) coincide in the magnitude with usual cell membrane potential (MP). Intercellular dissociations, however, cause appreciable differences in CPs at different scales. The data obtained show possible role of cytoplasmic calcium in primary control of hierarhic tissue integrity.