A 340/380 nm light‐emitting diode illuminator for Fura‐2 AM ratiometric Ca2+ imaging of live cells with better than 5 nM precision. - TINNING, P. W.; FRANSSEN, A. J. P. M.; HRIDI, S. U.; BUSHELL, T. J.; MCCONNELL, G. (Journal of Microscopy, 2018)