Evidence map›Paper›PMID 35387991›Full record

ArticleNature communications2022

Waffle Method: A general and flexible approach for improving throughput in FIB-milling.

Kotaro Kelley, Ashleigh M Raczkowski, Oleg Klykov, Pattana Jaroenlak, Daija Bobe, Mykhailo Kopylov, Edward T Eng, Gira Bhabha, Clinton S Potter, Bridget Carragher and 1 more

Abstract read
In one paragraph

Article in Nature communications, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

70 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
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  7. Characterization Standard forbioRxiv : the preprint server for biology · 2026
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  11. Review
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  13. Cryogenic electron tomography by the numbers: Charting underexplored lineages in structural cell biology.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Dimeric gold nanoparticles enable multiplexed labeling in cryoelectron tomography.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  19. Review
  20. Article

10 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Kotaro KelleyNational Center for In-situ Tomographic Ultramicroscopy, Simons Electron Microscopy Center, New York Structural Biology Center, New York, NY, USA.
Ashleigh M Raczkowski *National Center for In-situ Tomographic Ultramicroscopy, Simons Electron Microscopy Center, New York Structural Biology Center, New York, NY, USA.ORCID 0000-0002-8572-5857
Oleg Klykov *National Center for In-situ Tomographic Ultramicroscopy, Simons Electron Microscopy Center, New York Structural Biology Center, New York, NY, USA.
Pattana Jaroenlak *Skirball Institute of Biomolecular Medicine and Department of Cell Biology, New York University School of Medicine, New York, NY, USA.
Daija Bobe *National Center for In-situ Tomographic Ultramicroscopy, Simons Electron Microscopy Center, New York Structural Biology Center, New York, NY, USA.ORCID 0000-0002-7388-8907
Mykhailo KopylovNational Center for In-situ Tomographic Ultramicroscopy, Simons Electron Microscopy Center, New York Structural Biology Center, New York, NY, USA.
Edward T EngNational Center for In-situ Tomographic Ultramicroscopy, Simons Electron Microscopy Center, New York Structural Biology Center, New York, NY, USA.ORCID 0000-0002-8014-7269
Gira BhabhaSkirball Institute of Biomolecular Medicine and Department of Cell Biology, New York University School of Medicine, New York, NY, USA.
Clinton S PotterNational Center for In-situ Tomographic Ultramicroscopy, Simons Electron Microscopy Center, New York Structural Biology Center, New York, NY, USA.
Bridget CarragherNational Center for In-situ Tomographic Ultramicroscopy, Simons Electron Microscopy Center, New York Structural Biology Center, New York, NY, USA. bcarr@nysbc.org.ORCID 0000-0002-0624-5020
Alex J NobleNational Center for In-situ Tomographic Ultramicroscopy, Simons Electron Microscopy Center, New York Structural Biology Center, New York, NY, USA. anoble@nysbc.org.ORCID 0000-0001-8634-2279

Funding

TRD #3: An automated and streamlined pipeline for in-situ molecular microscopyP41GM103310 · NIGMS · SCRIPPS RESEARCH INSTITUTE, THE · PI KIEFT, JEFFREY S · 2012 to 2021
$14.7M
The National Center for In-situ Tomographic Ultramicroscopy (NCITU) SupplementU24GM139171 · NIGMS · NEW YORK STRUCTURAL BIOLOGY CENTER · PI DE MARCO, ALEX, KIEFT, JEFFREY S · 2020 to 2025
$8.7M
Structural basis of the polar tube invasion machinery from microsporidia parasitesR01AI147131 · NIAID · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI BHABHA, GIRA · 2020 to 2024
$3.4M
Structural Studies of Type II Cadherins on Membranes by Cryo-Electron TomographyF32GM128303 · NIGMS · NEW YORK STRUCTURAL BIOLOGY CENTER · PI NOBLE, ALEX JAMES · 2018 to 2019
$120k
NIAID NIH HHS R01 AI147131NIGMS NIH HHS F32 GM128303NIGMS NIH HHS P41 GM103310NIGMS NIH HHS U24 GM139171
6 · The paper itself

Abstract

Cryo-FIB/SEM combined with cryo-ET has emerged from within the field of cryo-EM as the method for obtaining the highest resolution structural information of complex biological samples in-situ in native and non-native environments. However, challenges remain in conventional cryo-FIB/SEM workflows, including milling thick specimens with vitrification issues, specimens with preferred orientation, low-throughput when milling small and/or low concentration specimens, and specimens that distribute poorly across grid squares. Here we present a general approach called the 'Waffle Method' which leverages high-pressure freezing to address these challenges. We illustrate the mitigation of these challenges by applying the Waffle Method and cryo-ET to reveal the macrostructure of the polar tube in microsporidian spores in multiple complementary orientations, which was previously not possible due to preferred orientation. We demonstrate the broadness of the Waffle Method by applying it to three additional cellular samples and a single particle sample using a variety of cryo-FIB-milling hardware, with manual and automated approaches. We also present a unique and critical stress-relief gap designed specifically for waffled lamellae. We propose the Waffle Method as a way to achieve many advantages of cryo-liftout on the specimen grid while avoiding the long, challenging, and technically-demanding process required for cryo-liftout.

Indexed as

Electron Microscope TomographyFoodCryoelectron MicroscopyFreezingWorkflow

Identifiers

PMID35387991
PMCPMC8987090

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.