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Quantitation of changes in cell shape using computerized image analysis demonstrated that PDGF doubled the total projected area of lamellipodia formed by each cell within 5 min of addition and increased it by almost 10-fold at 30 min (Fig. 3 â A).o determine relative changes in lamellipodia length in different regions of the cell, corners were defined as parts of the square perimeter within 6 Î¼m from the intersection of the two sides; sides were defined as the 18 Î¼m interval between these corner regions.
The stability of the lamellar phases formed with the anionic surfactant sodium 4-(1â²-heptylnonyl)benzenesulfonate, the cationic surfactant didodecyldimethylammonium bromide, and the nonionic surfactant pentaethylene glycol mono-n -dodecyl ether (C 12 E 5) is reported as water is gradually replaced with propylene glycol.he stability of the lamellar phase is a function of the periodic repeat distances and surfactant head group areas as measured by small angle X-ray scattering, and the results are discussed in terms of the inter-and intra-bilayer interactions.