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Electron Microscopy Unit

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Guofeng Zhang , Ph.D.
Guofeng Zhang
Biologist

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)

Image taken using electron mictroscopy

Image by Hong Xu, Ph.D. et al., NHLBI, obtained using BEPS’s TEM equipped with CCD camera
  • 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

Image taken using scanning electron microscope

Image by Bechara Kachar, M.D., NIDCD, obtained using BEPS’s Scanning Electron Microscope
  • 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

Image obtained using BEPS serial block face SEM

Image by Abner Notkins, M.D., et al., NIDCR, obtained using BEPS’s Serial Block Face SEM

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

Guofeng Zhang

32451441[uid] OR 32726643[uid] OR 22517616[uid] OR 34857844[uid] OR 29543442[uid] OR 34401678[uid] OR 26020550[uid] OR 32375181[uid] OR 31061173[uid] OR 30401752[uid] OR 28557263[uid] OR 24466366[uid] OR 30420913[uid] OR 22425023[uid] OR 23228423[uid] OR 27520728[uid] OR 34531522[uid] OR 28470979[uid] OR 21210706[uid] OR 25684354[uid] OR 30418749[uid] OR 21055473[uid] OR 26301492[uid] OR 25501370[uid] OR 26565809[uid] OR 26474409[uid] OR 22540867[uid] OR 22064945[uid] OR 25648146[uid] OR 26928972[uid] OR 21366330[uid] OR 19718033[uid]