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Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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Widefield two-photon excitation without scanning : live cell microscopy with high time resolution and low photo-bleaching

Amor, Rumelo and McDonald, Alison and Trägårdh, Johanna and Robb, Gillian and Wilson, Louise and Abdul Rahman, Nor Zaihana and Dempster, John and Amos, William Bradshaw and Bushell, Trevor J. and McConnell, Gail (2016) Widefield two-photon excitation without scanning : live cell microscopy with high time resolution and low photo-bleaching. PLOS One, 11 (1). ISSN 1932-6203

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Abstract

We demonstrate fluorescence imaging by two-photon excitation without scanning in biological specimens as previously described by Hwang and co-workers, but with an increased field size and with framing rates of up to 100 Hz. During recordings of synaptically-driven Ca2+ events in primary rat hippocampal neurone cultures loaded with the fluorescent Ca2+ indicator Fluo-4 AM, we have observed greatly reduced photo-bleaching in comparison with single-photon excitation. This method, which requires no costly additions to the microscope, promises to be useful for work where high time-resolution is required.