The Electron Microscope Laboratory (EML) is an imaging core and shared resource facility of the University of California at Berkeley.  Our mission is to provide high-quality electron microscopy services, education, and training for the UC Berkeley campus, other academic institutions, and private companies at-large.

The lab is equipped with high resolution transmission electron microscopes, scanning electron microscopes, high pressure freezer and full suite of ancillary sample preparation equipment to fit most EM-related needs. The equipment can provide nanometer scale analysis for biological, chemical and materials science.  

The EML offers multiple levels of service that correspond with the services and training each user desires:

  • Project consultation
  • Education and training for new users
  • Equipment for trained users who anticipate having long-term EM projects
  • Full service microscopy

All services are available to anyone with an interest in electron microscopy: graduate and undergraduate students, post-doctoral researchers, faculty, staff, and non-UC users.  

Please note, the EML now provides fee-for-service full service microscopy for campus and external users as our staff availability allows on an ad hoc basis.  Use the Quotation form to request this service.  

In addition to providing training as a service, the EML supports two MCB courses: MCB 481 B and 481 C.  We encourage any UC Berkeley student working with a mentor on campus (undergrad or graduate level) to talk with us about taking the course. It is a great way to get trained to use the equipment in the facility.  See the MCB course section for more information.  


Our address

Electron Microscope Lab
21 Barker Hall, #EML
Berkeley, CA 94720

Phone: 510-642-2085

To find us on campus:  We are in Room 21 of Barker Hall, which is located at the ground floor of the building.  See the pictures below to help guide you.

You can also find us on Google Maps:

For detailed written instructions on how to get to our facility, please click HERE


Danielle Jorgens is the director of the EML. She earned her PhD from UC Berkeley (2013) in Comparative Biochemistry, where she trained in advanced sample preparation techniques including cryopreservation for cells and tissues. She was a post-doctoral fellow and then a research assistant professor specializing in the ultrastructure of cancer biology at Oregon Health and Science University. Her research interests focus on the ultrastructure of the nucleolus and nucleus in cancer and normal tissues. She is also interested in developing novel methods and applications for volume electron microscopy (Volume EM) and correlative light and electron microscopy (CLEM).


Reena Zalpuri earned Masters and Bachelors degrees in Biophysics from Punjab University Chandigarh, India. She had training in transmission electron microscopy while working on her research project titled “Adriamycin treated rat myocardium-light & Transmission electron microscopic study”.  She oversees the training and operation of the TEMs within the EML and teaches the TEM course (MCB 481B).


Guangwei Min earned his PhD in Structure Biology from Peking University, China. His postdoc training was focused on studying the three-dimensional (3D) structure of biological macro-molecules at New York University.  He oversees the training and operation of the SEMs within the EML, maintains the website, and teaches the SEM course (MCB 481C).



General Inquiries and Questions:

For inquiries or questions regarding EML recharges or other billing info, please send email to the following address, or use our Contact Us form, or call our main lab phone.


Phone: (510) 642-2085



Kent McDonald was the director of the EML from 1993 to when he retired in 2017.  He earned a degree in Botany from UC Berkeley (1972) and did his post-doctoral training in cell biology at the University of Colorado, Boulder.  His primary research interest was the ultrastructure of the mitotic spindle apparatus. In recent years, he became interested in development and application of cryopreservation techniques for high resolution EM and EM immunocytochemistry.  Dr. McDonald continues to be active in the EM field and is an avid photographer.


Gordon Vrdoljak is a 22 year veteran in analytical chemistry and earned a PhD in Chemistry from the Department of Environmental Sciences at UC Berkeley.  He was a Senior Research Associate within the EML at UC Berkeley, where he taught classes in electron microscopy.  Following his time with the EML, Dr. Vrdoljak became a Research Scientist IV in the Food and Drug Laboratory at CDPH, a Research Scientist Supervisor of the Chemistry Section of the same Food and Drug Laboratory, and most recently, the Research Supervisor of the Cannabis Testing Section of the Food and Drug Laboratory at CDPH.  He has a passion for science and in his spare time enjoys science fiction, ice skating with his daughters, and photography.  He has a blog of science images at



The EML strives to provide excellent service to users and students and in-turn we hope that data collected in our facility enables excellent science.  For data collection or sample preparation conducted in our facility, by the user or our staff, we ask that the EML be acknowledged in the manuscript, publication or other media.  If a particular staff member assisted you, please acknowledge them specifically.  

An example of a general acknowledgement:

“Thank you to the staff at the University of California Berkeley Electron Microscope Laboratory for advice and assistance in electron microscopy sample preparation and data collection.”

Further, we would like to highlight and elevate the profile of our user’s work and as such request that any publications be shared with us electronically so that we can link to them from our website.  See our curated list of publications HERE.

We also appreciate that not all data makes it into a publication and we are always open to highlighting images collected by our users on our website.  If you have data that you wish to have highlighted in our GALLERY, please let our staff know!


Thursday 01-23-20 12:28:49 PM

Dec 04, 2019  EML has been moved to Barker Hall early this year. We will not move back to Giannini Hall. Please come to our new location at 21 Barker Hall on the ground floor.

Dec. 4, 2019 EML will be closed from 12/23/2019 to 1/1/2020 for the holidays.

Nov. 18, 2019 There may be a power shutoff this Wednesday and Thursday according to PG&E. If that happens, EML will be closed for two days. Please check back for updates.

Oct. 29, 2019 Power is back on. EML is open today. Please check here and our twitter for any updates.

Oct. 25, 2019 Campus may have limited power this weekend. We are not sure about the situation for the coming Monday. Please check our twitter for newest update.

Oct. 14, 2019 We will be hosting the Hitachi TM4000 education SEM for the week of Oct. 28th through Nov. 1st.  We'll have a special sign up sheet to come and check it out in person.  More on that soon!


Oct. 14, 2019 The 2019 Bay Area Science Festival ( off on Oct. 25th and runs until Nov. 2nd.  Check out the calendar of events!  Sign up for a tour of the EML here


Oct. 14, 2019 Join us for the 2019 Barker Hall Vendor Show on Oct. 23rd 3PM-5PM on the Barker Lawn

Oct. 10, 2019 EML will be closed tomorrow (10/11) due to the PG&E Power Outage. All the EM schedule will be cancelled without charge.

Oct. 10, 2019 EML is closed for today due to the PG&E Power Outage. All the EM schedule will be cancelled without charge.

Oct. 08, 2019 In regards to the planned power outage, Barker Hall is 100% generator backup, we expect to be open for the rest of the week. Check our twitter feed for real time updates.

Aug. 20, 2019 LAB WILL BE CLOSED from 8/30 (Friday) to 9/3 (Tuesday). And no wet lab work will be allowed on 8/29 (Thursday).

Jul. 3, 2019 EML will be closed for two days from July 4th to 5th.

Feb 8, 2019 Mix science and art into a beautiful pixel slurry @ Vision+Light: Processing Perception. Visit the event being held at the Worth Ryder Art Gallery Feb 20th ~ March 14th.   ~~ Also check out the great evening talks happening Mar 6 and Mar 12!

Search FTP Server Resources Terms of Use Email Us
Copyright © 2006-2020, Electron Microscope Laboratory at UC Berkeley