Figure 4: Time evolution of the effects on (a) surface pressure ( ) and (b) electric surface potential ( ) caused by penetration of lactophoricin-I (N-23-T) to DPPC monolayer under stationary diffusion conditions; the courses registered at various initial densities of pure DPPC monolayer are characterized by the initial surface pressure values, (denoted therein). The peptide’s concentration is 1 μM.