Imaging protein interactions by FRET microscopy: FLIM measurements.

@article{Verveer2006ImagingPI,
  title={Imaging protein interactions by FRET microscopy: FLIM measurements.},
  author={Peter J. Verveer and Oliver Rocks and Ailsa G. Harpur and Philippe I. H. Bastiaens},
  journal={CSH protocols},
  year={2006},
  volume={2006 6}
}
This image acquisition protocol is a basic plan for taking a fluorescence lifetime imaging (FLIM) series. FLIM makes live-cell FRET measurements based only on donor fluorescence more feasible, because lifetimes are independent of probe concentration and light path length. The former is not easy to determine in cells, and the latter means that cell shape is not a factor.