High-speed fluorescence imaging and intensity profiling of femtosecond-induced calcium transients.

Publication Type:
Journal Article
Citation:
International journal of biomedical imaging, 2006, 2006 pp. 93438 - ?
Issue Date:
2006-01
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We have demonstrated a combined imaging system, where the physiology of biological specimens can be imaged and profiled at 10-20 frames per second whilst undergoing femtosecond laser irradiation. Individual GH3 cells labeled with the calcium fluorophore Fluo-3 were stimulated using a counter-propagating focused femtosecond beam with respect to the imaging system. As a result of the stimulation, calcium waves can be generated in COS cells, and laser-induced calcium oscillations are initiated in the GH3 cells. Single-photon fluorescence images and intensity profiles of the targeted specimens are sampled in real-time using a modified PerkinElmer UltraView LCI microscope.
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