In vivo label-free two-photon excitation autofluorescence microscopy of microvasculature using a 520 nm femtosecond fiber laser
Posted on 2020-05-04 - 16:20
Observing microvasculature in its native environment provides invaluable information to understand the initiation and development of microcirculatory related diseases. However, the lack of high-resolution three-dimensional (3D) imaging technique hinders in vivo investigation of the microvasculature. Recently, we found that the red blood cells can emit autofluorescence signals with short-wavelength two-photon excitation. In this study, we exploited this property and developed a time-resolved two-photon excitation microscopy system using a home-made 520 nm femtosecond fiber laser as the excitation source. Using this system, we could achieve intravital high-resolution 3D imaging of microvascular network noninvasively. In a mouse tumor model, tumorous blood vessels could be observed and distinguished clearly from the normal vessels.
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Wu, Ting; Liao, Jiuling; Yu, Jia; Gao, Yufeng; Li, Hui; Wu, Jiarui; et al. (2020). In vivo label-free two-photon excitation autofluorescence microscopy of microvasculature using a 520 nm femtosecond fiber laser. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.4915539.v1
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AUTHORS (9)
TW
Ting Wu
JL
Jiuling Liao
JY
Jia Yu
YG
Yufeng Gao
HL
Hui Li
JW
Jiarui Wu
XX
Xianyuan Xia
KS
Kebin Shi
WZ
Wei Zheng