Multipohoton microscopy experiment using Leica TCS SP8 MP and Leica 20x/0.95 NA BABB immersion objective.
Understanding kidney microanatomy is key to detecting and identifying early events in kidney disease. Improvements in tissue clearing and imaging have been crucial in this field, and now we report on a novel, time-efficient method to study podocyte depletion in renal glomeruli using a combination of immunofluorescence, optical clearing, confocal microscopy and 3D analysis.
THG microscopy as special variants of multiphoton microscopy.
Third Harmonic Generation (THG) microscopy is a non-fluorescent multi-photon technique that combines the advantages of label-free imaging with restriction of signal generation to the focal spot of the scanning laser. It allows three-dimensional imaging of refraction index mismatches and of hemoglobin.
This interactive tutorial explains the principles of multiphoton microscopy for deep tissue imaging. Multiphoton microscopy uses excitation wavelengths in the infrared taking advantage of the reduced scattering of longer wavelengths. This makes multiphoton imaging the perfect tool for deep tissue imaging in thick sections and living animals.
Advanced microscopical techique for life science: multiphoton microscopy.
Multi-photon excitation (MPE) microscopy plays a growing role among microscopical techniques utilized for studying biological matter. In conjunction with confocal microscopy it can be considered the imaging workhorse of life science laboratories. Its roots can be found in a fundamental work written by Maria Goeppert Mayer more than 70 years ago. Nowadays, 2PE and MPE microscopes are expected to increase their impact in areas such biotechnology, neurobiology, embryology, tissue engineering, materials science where imaging can be coupled to the possibility of using the microscopes in an active way, too.
Quantitative measurement method based on FRAP and FRAPa using multiphoton microscopy.
We present a new convenient method for quantitative three-dimensionally resolved diffusion measurements based on the photobleaching (FRAP) or photoactivation (FRAPa) of a disk-shaped area by the scanning laser beam of a multiphoton microscope. Contrary to previously reported spot-photobleaching protocols, this method has the advantage of full scalability of the size of the photobleached area and thus the range of diffusion coefficients, which can be measured conveniently.
Cancer research using confocal and multiphoton microscopy.
Sequencing of the human genome stimulated a radical change in the approach to biomedical research. The comprehension of the mechanisms regulating life gained a scale-up in throughput to speed up the retrieval of data for a global vision of a system of incomparable complexity.
CLARITY clearing derivatives for multiphoton microscopy.
Transparent organisms help us to identify spatial arrangements and connections of cells and tissues, especially neuronal circuits can easily be identified and characterized. CLARITY is on everyone's lips.
Multi-channel multiphoton microscopy with dedicated optics for CLARITY.
Why clearing? Curiosity is human nature. And nothing attracts as much curiosity as the inside of living organisms. While in ancient times those who cut human bodies open to do research were put to death, and modern anatomy started only after Pope Clement VII allowed dissection, we can now watch brains working in living animals – and have a good chance of soon being able to interfere with the observed activities for healing (or control) purposes.
Imaging whole brains with CLARITY and multiphoton microscopy.
Image a whole brain without sectioning? Investigate neuronal circuits without reconstruction? Perform molecular phenotyping without destroying subcellular structures? Understanding the brain with molecular resolution and global scope has always been challenging. The novel CLARITY method, developed by the Deisseroth laboratory at Stanford University, USA, pushes the barrier of deep tissue imaging a big step ahead.