An introduction to scanning transmission electron microscopy for the study of protozoans.
protozoans
scanning transmission electron microscopy
structural biology
thick specimens
Journal
Molecular microbiology
ISSN: 1365-2958
Titre abrégé: Mol Microbiol
Pays: England
ID NLM: 8712028
Informations de publication
Date de publication:
23 Dec 2023
23 Dec 2023
Historique:
revised:
29
11
2023
received:
01
08
2023
accepted:
05
12
2023
medline:
23
12
2023
pubmed:
23
12
2023
entrez:
23
12
2023
Statut:
aheadofprint
Résumé
Since its inception in the 1930s, transmission electron microscopy (TEM) has been a powerful method to explore the cellular structure of parasites. TEM usually requires samples of <100 nm thick and with protozoans being larger than 1 μm, their study requires resin embedding and ultrathin sectioning. During the past decade, several new methods have been developed to improve, facilitate, and speed up the structural characterisation of biological samples, offering new imaging modalities for the study of protozoans. In particular, scanning transmission electron microscopy (STEM) can be used to observe sample sections as thick as 1 μm thus becoming an alternative to conventional TEM. STEM can also be performed under cryogenic conditions in combination with cryo-electron tomography providing access to the study of thicker samples in their native hydrated states in 3D. This method, called cryo-scanning transmission electron tomography (cryo-STET), was first developed in 2014. This review presents the basic concepts and benefits of STEM methods and provides examples to illustrate the potential for new insights into the structure and ultrastructure of protozoans.
Types de publication
Journal Article
Review
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2023 The Authors. Molecular Microbiology published by John Wiley & Sons Ltd.
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