摘要: This chapter provides an overview of the cell membrane concept. It discusses early functional studies cellular plasma membranes and presents a summary structure as inferred from studies. The concept is useful to collect ideas about these experiments. outlines five basic facts (1) universal barrier passage solutes. Wilhelm Pfeffer, German botanist's postulation. (2) thin layer lipoidal material. Charles Overton's (3) bimolecular leaflet with lipid polar groups facing outwards. Evert Gorter F. Grendel's conclusion. (4) could have aqueous pores, approximately 8A in diameter according Ruhland Hoffman's data. (5) Different mosaic structures varying proportions areas pores. Paul Collander's hypothesis.