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. 2010 Aug 10;5(8):e12097. doi: 10.1371/journal.pone.0012097

Figure 2. Cell structural model.

Figure 2

a) The perimeter of the cell and nucleus (i.e. their corresponding membranes) are initially discretized into Inline graphic nodes (points). The superscript Inline graphic indicates that the point is on the cell membrane and superscript Inline graphic represents a point on the nuclear membrane. If neither Inline graphic nor Inline graphic are specified, the given point can be assumed to lie on either the cell membrane or nucleus. For example, the Inline graphic membrane's point of Inline graphic cell represented by Inline graphic. Each line that connects two points (red, green and blue lines) refers to a Voigt subunit. The total force that acts on each point is Inline graphic and is calculated by Eq(1) b) Voigt subunit. A linear Kelvin-Voigt solid element, represented by a purely viscous element (a damper) and purely elastic element (a spring) connected in parallel. The force that is exerted on Inline graphic from this subunit is Inline graphic (Eq.(2)). Inline graphic is the spring constant and Inline graphic represents viscosity.