Filament distribution in the system with progressive gel front.

The probability distribution of (a) detached and (b) attached filaments for the early state and (c, d) the late stage of membrane protrusion. The total number of filaments is constant and equal to 25 during the whole process. Here μ and σ are mean value and standard deviation of a normal distribution fitted to the data. Parameters are na = 0.1 nm−1, Fe = 12 pN, and .