Guofeng Zhang, Ph.D.
The Electron Microscopy Unit of the BEPS provides state-of-the-art instrumentation, training, and services. The unit collaborates on projects using immuno-electron microscopy and electron tomography. Training on specimen preparation, including cryo-techniques, can also be provided. Please find a full list of services and pricing in the lab resources section below.
Transmission Electron Microscopy (TEM)
- Fully automated FEI Tecnai T12 transmission electron microscope
- High-sensitivity 2k x 2k CCD camera for digital imaging and transfer of data across network directly to users’ laboratories.
- Automated electron tomography, and energy-dispersive x-ray spectroscopy
- Immuno electron microscopy
Preparative Techniques for TEM
- Standard fixation, embedding and sectioning (Leica EM UC6 microtome)
- High-pressure fixation (BalTec HPM 010)
- Freeze-substitution (Leica EM AFS 1/2)
- Pre- and post-embedding immunolabeling, cryosectioning (Tokyuasu technique) (Leica Ultracut UCT/FCS cryomicrotome)
- Negative staining of macromolecular assemblies
Scanning Electron Microscopy
- Fully automated Hitachi S-4800 field-emission scanning electron microscope (FESEM) provides tool for determining 3D surface morphology of cells and biomaterials
- Users can be trained to collect SEM images independently
- Sputter coater (Balzers) for specimen preparation
- Critical point dryer (EM Sciences)
Serial Block Face Scanning Electron Microscopy (SBF-SEM)
- Fully automated Zeiss Sigma/Gatan 3View Serial block face SEM provides 3D imaging of tissues (up to 300 microns across) at the nanoscale
- Visualization software for 3D rendering of biological structures
- Specialized specimen preparation techniques for SBF-SEM of tissues and isolated cells
Location of Electron Microscopy Unit
Building 13 on the NIH campus
Pricing
- Tecnai T12 TEM (BEPS staff operation) $150 per hour
- Tecnai T12 TEM (client operation) $80 per hour
- Zeiss SIGMA/Gatan 3View SBF-SEM $100 per hour
- Hitachi S-4800 (client operation) $100 per hour
- EM Sample Embedding $300 for 1-5 samples
- EM Sample Sectioning $80 per sample
- EM Immunostaining $400 per set
Sci Rep
2021 Dec 02
Commun Biol
2021 Sep 16
iScience
2021 Aug 20
Neuroimage
2020 Nov 01
Nat Cell Biol
2020 Jun
J Cell Biol
2020 Jul 06
EMBO J
2019 Jun 17
J Mater Chem B
2018
ACS Nano
2018 Dec 26
Blood Adv
2018 Nov 13
J Am Chem Soc
2018 Apr 04
Angew Chem Int Ed Engl
2017 Jul 03
Angew Chem Int Ed Engl
2017 Jun 01
Nanomedicine
2017 Feb
Adv Mater
2016 May
PLoS One
2015
PLoS Genet
2015 Oct
Tumor-Specific Formation of Enzyme-Instructed Supramolecular Self-Assemblies as Cancer Theranostics.
ACS Nano
2015 Oct 27
ACS Nano
2015 Jul 28
EMBO Rep
2015 Apr
Mol Biol Cell
2015 Feb 15
Transl Oncol
2013 Dec 01
Biomaterials
2013 Feb
Small
2012 Jul 23
Biomaterials
2012 Jun
ACS Nano
2011 Apr 26
Nano Lett
2011 Feb 09
J Struct Biol
2011 Apr