>>10891751http://www.mediafire.com/folder/dj875cd10yb72/EMFAt the most basic the intracellular (cytoplasm) and extracellular environments are separated by a phospholipid bilayer.
https://en.wikipedia.org/wiki/Fluid_mosaic_model#/media/File:Cell_membrane_detailed_diagram_en.svghttps://en.wikipedia.org/wiki/Lipid_bilayerThe cellular environment where these phenomena take place, from Adey 1993 - Biological Effects of Electromagnetic Fields:
"In cellular aggregates that form tissues of higher animals, cells are separated by narrow fluid channels that take on special importance in signaling from cell to cell. These channels act as windows on the electrochemical world surrounding each cell. Hormones, antibodies, neurotransmitters and chemical cancer promoters, for example, move along them to reach binding sites on cell membrane receptors. These narrow fluid "gutters," typically not more than 150 A wide, are also preferred pathways for intrinsic and environmental electromagnetic (EM) fields, since they offer a much lower electrical impedance than cell membranes. Although this intercellular space (ICS) forms only about 10 percent of the conducting cross section of typical tissue, it carries at least 90 percent of any imposed or intrinsic current, directing it along cell membrane surfaces.
Numerous stranded protein molecules protrude from within the cell into this narrow ICS. Their glycoprotein tips form the glycocalyx, which senses chemical and electrical signals in surrounding fluid. Their highly negatively charged tips form receptor sites for hormones, antibodies, neurotransmitters, and for many metabolic agents, including cancer promoters. These charged terminals form an anatomical substrate for the first detection of weak electrochemical oscillations in pericellular fluid, including field potentials arising in activity of adjacent cells or as tissue components of environmental fields."
https://pdfs.semanticscholar.org/5306/e5b2a202f3aaa815ff553d5d28c5606a746f.pdf 
