We present an optimized local ejection procedure using a glass micro-pipette and a fast two-photon hyperstack imaging method, which allows precise measurement of capillary diameter changes and investigation of its regulation in three dimensions.
Cai, C., Zambach, S. A., Fordsmann, J. C., Lønstrup, M., Thomsen, K. J., Jensen, A. G. K., Lauritzen, M. In Vivo Three-Dimensional Two-Photon Microscopy to Study Conducted Vascular Responses by Local ATP Ejection Using a Glass Micro-Pipette. J. Vis. Exp. (148), e59286, doi:10.3791/59286 (2019).