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. 2001 Apr 2;153(1):177–190. doi: 10.1083/jcb.153.1.177

Figure 1.

Figure 1

TIRFM Optics. Cells are cultured on plastic culture dishes in which the bottom has been drilled out and a glass coverslip has been glued. The excitation light is provided by the 488-nm line of the laser focused by a long focal lengths just before the beam enters the microscope base. The beam then reflects up from the microscope's base optics, and TIRFM is created by a trapezoidal glass prism (flint glass, 1.648 refractive index, cut from a triangular prism commercially available from Rolyn Optics) mounted on the condenser mount. A thin layer of immersion oil separates the prism from the glass coverslip. The cells are visualized through a 0.75 NA 40× achromat water immersion objective (160-mm tube length) mounted on a Leitz Ortholux upright microscope. Local perfusion of individual cells can be performed by positioning a quartz pipette within a few hundred microns of the cell of interest.