结合TPEF二倍频和三倍频的飞秒振荡器显微术对秀丽杆线虫微孔结构的活体成像技术

2010-11-05 16:28  下载量:99

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In this study, we use combined two-photon excitation fluorescence (TPEF), second-harmonic generation (SHG) and third-harmonic generation (THG) measurements to image cellular structures of the nematode Caenorhabditis elegans, in vivo.Toourknowledge, this is the first time thataTHGmodality is employed to image live C. elegans specimens. Femtosecond laser pulses (1028 nm) were utilized for excitation. Detailed and specific structural and anatomical features can be visualized, by recording THG signals. Thus, the combination of three image-contrast modes (TPEF-SHG-THG) in a single instrument has the potential to provide unique and complementary information about the structure and function of tissues and individual cells of live biological specimens.

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