Fig. 2From: Lipid bilayer properties potentially contributed to the evolutionary disappearance of betaine lipids in seed plantsLamellar period d of DPPC (a) and DP-DGTS (b) solid-supported multilayers as a function of the applied osmotic pressure Π, measured at 50 °C. The period was determined by neutron diffraction at 100% D2O contrast (blue), and at 8% D2O contrast (red). The coexistence between the gel and fluid phases is shown with the circles and the triangles, respectivelyBack to article page