Navigation Links
High-resolution light microscope reveals the fundamental mechanisms of nerve communication

In a simultaneous publication (Science Express, 13th April 2006), STED microscopy revealed the spatial distribution of the bruchpilot protein and aided neurobiologists from the European Neuroscience Institute and the University of Würzburgin understanding the protein's central role in the formation of active synaptic zones. STED microscopy radically distinguishes itself from conventional farfield light microscopy in the fact that its resolution is no longer fundamentally limited by the wavelength of light used. Using STED, nanoscale optical studies are now possible inside cells.

Since its discovery in the 17th century, the light microscope has been the key to new biological and medical discoveries. Light, however, propagating as a wave, is subject to the phenomenon of diffraction, whose resolution-limiting effects were first described by Ernst Abbe in 1873. Abbe observed that structures which were closer to each other than ~200nm could not be visually separated when observed using visible light; when viewed through the optical microscope they are perceived as a blurred, single entity. Abbe's realization of the resolution limitation of the optical microscope was long thought to be a unalterable law of far-fieldlight imaging. Achieving higher resolution required the use of an electron microscope.

Despite that fact that electron beams can be more tightly focused, it is often difficult to efficiently label the proteins of a cell to render them visible with an electron microscope. Moreover, electron beams are only able to penetrate the first several micrometers of a biological sample. For these reasons, among others, despite using electron microscopy for high-resolution cell imaging, many questions of nerve function remained unanswered. In contrast, using fluorescent molecules as markers, one can specifically label individual proteins with high efficiency, rendering them visible with the conventional fluorescent microscope. Unfortunately the high resolutio
'"/>

Source:Max-Planck-Gesellschaft


Page: 1 2 3

Related biology news :

1. Researchers discover way to make cells in the eye sensitive to light
2. Recent breakthroughs in common adult leukemia highlighted in New England Journal of Medicine
3. Bacteria collection sheds light on urinary tract infections
4. Sea skate experiment sheds light on human cell transport
5. X-Ray Beams And Fruit Fly Flight Simulator Aid Scientists View Of Muscle Power
6. McGill researchers shed light on formation of carcinogen in food
7. Scientists discover how plants disarm the toxic effects of excessive sunlight
8. Medical molecules designed to respond to visible light that can penetrate tissue
9. Genetic defects give the immune system the green light to attack the pancreas
10. Researchers find gene that may be at root of potato blight
11. Remote control flies? Fly behavior controlled by laser light
Post Your Comments:
(Date:1/22/2015)... Jan. 13, 2015  Today, FreeWavz ( www.FreeWavz.com ), ... crowdfunding campaign on Fundable, https://www.fundable.com/freewavz . FreeWavz ... production capacity to meet customer demand. ... http://photos.prnewswire.com/prnh/20150113/168790 Invented by ...
(Date:1/22/2015)... 15, 2015  BellBrook Labs, a leader in high ... launch of a TR-FRET (time resolved Forster resonance ... Assay, a high throughput screening assay for glycosyltransferases ... allow for sensitive detection of hundreds of human ...
(Date:1/22/2015)... Inc. (NASDAQ: NXTD and NXTDW) a biometric authentication company ... of the Wocket™ smart wallet at CES 2015 in Las ... one of the "11 Hot Products at CES" in a review published ... Far" by Newseveryday.com and "The top 10 gadgets from CES 2015" by ...
Breaking Biology News(10 mins):FreeWavz Launches on Fundable to Drive Speed-to-Market in 2015 2BellBrook Labs Launches a High Throughput Screening Assay for Glycosyltransferases with TR-FRET Readout 2CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 2CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 3
... working in College of Life Science, Zhejiang University, has ... CpG island has a parental differentially methylated region (DMR). ... imprinting exists in lower vertebrates and genomic imprinting should ... mammals. The study is reported in volume 54 (Issue ...
... A team of University of Oregon biologists, using fruit ... specific cells, opening a new window on how gene ... While DNA (deoxyribonucleic acid) provides an identical genetic blueprint ... that turn protein molecules on and off in different ...
... is the latest American Chemical Society (ACS) Weekly PressPac ... from ACS, 34 peer-reviewed journals and Chemical & Engineering ... Society as the source for this information. ... melamine-adulterated food , Journal of Agricultural and Food ...
Cached Biology News:The evolutionary foundation of genomic imprinting in lower vertebrates 2New tool isolates RNA within specific cells 2American Chemical Society's Weekly PressPac -- May 13, 2009 2American Chemical Society's Weekly PressPac -- May 13, 2009 3American Chemical Society's Weekly PressPac -- May 13, 2009 4American Chemical Society's Weekly PressPac -- May 13, 2009 5American Chemical Society's Weekly PressPac -- May 13, 2009 6American Chemical Society's Weekly PressPac -- May 13, 2009 7American Chemical Society's Weekly PressPac -- May 13, 2009 8American Chemical Society's Weekly PressPac -- May 13, 2009 9American Chemical Society's Weekly PressPac -- May 13, 2009 10
(Date:1/23/2015)... Portal Solutions , a technology consulting firm that ... 365 and SharePoint platforms , today announces its inclusion in ... of the region’s fastest-growing mid-sized companies based on a combined ... be recognized a second year in a row by SmartCEO ...
(Date:1/22/2015)...  Transwestern | RBJ today announces the firm brokered a long-term ... a leading biopharmaceutical company, at Two Ledgemont Center in ... Richards , president, and Brian Cohen , senior vice ... building at 95 Hayden Ave. Photo - ...
(Date:1/22/2015)... San Diego, California (PRWEB) January 22, 2015 ... R Promotional Offer to their comprehensive portfolio of ... Offer allows customers to purchase a Centrifuge 5424/5424 R ... Pipette Bundle of either Eppendorf Research plus or Eppendorf ...
(Date:1/22/2015)... Diagenode, Inc., a leading global provider ... complete solutions for epigenetics research, recently launched a ... need for manual processing. The new ChIPettor System ... histones or transcription factors and a semi-automated pipette ...
Breaking Biology Technology:Washington SmartCEO Announces Portal Solutions as 2015 Future 50 Award Winner Second Year in a Row 2Washington SmartCEO Announces Portal Solutions as 2015 Future 50 Award Winner Second Year in a Row 3Transwestern?RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Eppendorf Announces Promotional Bundle Which Includes: Eppendorf Centrifuge 5424, 3-Pack of Pipettes, and Tips - Available Now at Pipette.com 2Diagenode Launches Unique Semi-Automated Solution for Chromatin Immunoprecipitation 2
... April 7 Transgenomic, Inc. (OTC Bulletin Board: TBIO), ... completed a licensing option with the Dana-Farber Cancer Institute, ... Cold-PCR. This variation of the standard PCR technology ... was invented at Dana-Farber by Dr. Mike Makrigiorgos who ...
... WellGen, Inc. today announced that Dr. Roderick (Roddy) ... Executive Officer. Dr. Carter, 45, takes over ... Chief Executive Officer. Mr. Bertoldi will continue in ... Financial Officer of Amphion Innovations plc (LSE: AMP), a ...
... Inc. today announced that it has secured $38 million ... formation in 2004, the company has raised $92 million ... financing round, which consists of two tranches, was led ... pro rata participation of existing investors Apax Partners, Clarus ...
Cached Biology Technology:Transgenomic Completes Licensing Option With Dana-Farber Cancer Institute on Cold-PCR for Enrichment of DNA Mutations 2Transgenomic Completes Licensing Option With Dana-Farber Cancer Institute on Cold-PCR for Enrichment of DNA Mutations 3Transgenomic Completes Licensing Option With Dana-Farber Cancer Institute on Cold-PCR for Enrichment of DNA Mutations 4Dr. Roddy Carter Named President and Chief Executive Officer of WellGen, Inc. 2Dr. Roddy Carter Named President and Chief Executive Officer of WellGen, Inc. 3Aerovance Secures $38 Million in Equity Financing 2Aerovance Secures $38 Million in Equity Financing 3
... for monitoring acetylcholinesterase (AChE) activity. This is ... 5 min), non-radioactive and easy to use ... natural substrate, acetylcholine. A series of coupled ... AChE into a change in luminescence. Inhibitors ...
... Pulsed Dynamic Focusing MALDI (PDF-MALDI) source provides ... that do not need online separation. Paired ... LC/MS and Agilents powerful Spectrum Mill software, ... analysis of 2D gel-spot digests. It provides ...
Rabbit polyclonal to Vitronectin ( Abpromise for all tested applications). Antigen: Full length Vitronectin protein (Mouse). Entrez Gene ID: 7448 Swiss Protein ID: P04004...
... The Vibratome Roto-Shake Genie is ... platform. It performs five different ... rolling/rocking and rotating/rolling, as well as ... The precision-engineered moving portion of ...
Biology Products: