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See-through organs and bodies will accelerate biomedical discoveries
Date:7/31/2014

rgans and bodies, in part by making the process faster. First, they identified the optimal hydrogel that allows detergents to quickly remove lipids from tissue using an approach named passive CLARITY technique (PACT). To markedly speed up the clearing process without causing tissue damage, they introduced an innovative procedure called perfusion-assisted agent release in situ (PARS), which involves directly delivering the hydrogel and clearing reagents into the bloodstream of intact rodents. The reagents diffused throughout the tissues and completely clarified organs such as the kidney, heart, lung, and intestine within 2 to 3 days, while the whole brain and entire body cleared within 2 weeks.

The researchers also developed a recipe for refractive index matching solution (RIMS), which enables the long-term storage of cleared tissue and imaging thick, cleared tissue using a conventional confocal microscope. The new methods allow for the analysis of intact connections between cells as well as structures and molecules within single cells using standard genetic and molecular biology techniques. "Our easy-to-use tissue clearing protocols, which employ readily available and cost-effective reagents and equipment, will make the subcellular interrogation of large tissue samples an accessible undertaking within the broader research and clinical communities," Gradinaru says.


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Contact: Mary Beth O'Leary
moleary@cell.com
617-397-2802
Cell Press
Source:Eurekalert  

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