Immunofluorescence stimulated emission depletion microscopy.

Dyba, Marcus; Jakobs, Stefan; Hell, Stefan W · Nat Biotechnol · 2003

basic_science · Level V

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Abstract

We report immunofluorescence imaging with a spatial resolution well beyond the diffraction limit. An axial resolution of approximately 50 nm, corresponding to 1/16 of the irradiation wavelength of 793 nm, is achieved by stimulated emission depletion through opposing lenses. We have demonstrated not only that an antibody-tagged label is stable enough to be recorded in this microscopy mode, but also that subdiffraction resolution can be obtained using a standard immunofluorescence preparation.

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