JOURNAL ARTICLE
RESEARCH SUPPORT, N.I.H., EXTRAMURAL
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Building Cell Structures in Three Dimensions: Electron Tomography Methods for Budding Yeast.

Saccharomyces cerevisiae has been an important model system for numerous cellular, genetic, and molecular studies. However, this small eukaryote presents a challenge for imaging at the electron microscope level. Preparation of yeast using high-pressure freezing followed by freeze-substitution (HPF/FS) results in excellent preservation of cell structure in these difficult-to-fix samples. In particular, cells prepared by HPF/FS can be used for 3D electron tomography (ET) studies where optimum cell preservation is critical. Here, we discuss the advantages of using HPF/FS for ET and show examples of the utility of this method for building yeast cell structures in three dimensions.

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