In vivo single-cell labeling by confined primed conversion.

Dempsey, William P; Georgieva, Lada; Helbling, Patrick M; Sonay, Ali Y; Truong, Thai V; Haffner, Michel; Pantazis, Periklis · Nat Methods · 2015

basic_science · Level V

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Abstract

Spatially confined green-to-red photoconversion of fluorescent proteins with high-power, pulsed laser illumination is negligible, thus precluding optical selection of single cells in vivo. We report primed conversion, in which low-power, dual-wavelength, continuous-wave illumination results in pronounced photoconversion. With a straightforward addition to a conventional confocal microscope, we show confined primed conversion in living zebrafish and reveal the complex anatomy of individual neurons packed between neighboring cells.

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