Dual-label STED nanoscopy of living cells using photochromism.

Willig, Katrin I; Stiel, Andre C; Brakemann, Tanja; Jakobs, Stefan; Hell, Stefan W · Nano Lett · 2011

basic_science · Level V

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Abstract

We demonstrate live-cell STED microscopy of two protein species using photochromic green fluorescent proteins as markers. The reversible photoswitching of two markers is implemented so that they can be discerned with a single excitation and STED wavelength and a single detection channel. Dual-label STED microscopy is shown in living mammalian cells.

Medical subject headings