Cell Freezing Protocol
Cell Freezing Protocol - Related Videos
08:00
Freezing Human ES Cells
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Cited by 2 •
2006
Here we demonstrate how our lab freezes HuES human embryonic stem cell lines.
07:32
Freezing, Thawing, and Packaging Cells for Transport
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Cited by 2 •
2008
Cultured mammalian cells are used extensively in cell biology studies. This video describes the basic skills required to freeze and store cells and how to recover frozen stocks.
08:49
Freezing and Thawing Human Embryonic Stem Cells
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Cited by 6 •
2009
Since James Thomson et al developed a technique in 1998 to isolate and grow hES in culture, freezing cells for later use and thawing and expanding cells from a frozen stock have become important procedures performed in routine hES cell culture. Since hES cells are very sensitive to the stresses of freezing and thawing, special care must taken. Here we demonstrate the proper technique for rapidly thawing hES cells from liquid nitrogen stocks, plating them on mouse embryonic feeder cells, and...
08:55
Formulations for Freeze-drying of Bacteria and Their Influence on Cell Survival
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Cited by 22 •
2013
Freeze-drying is often an easy and convenient way to obtain dry products of viable bacterial cells. An issue of the process is cell survival. We detail here a procedure to investigate how cell survival during freeze-drying is influenced by the properties of the formulation used.
07:30
Protocol for Producing Three-Dimensional Infrared Video of Freezing in Plants
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Cited by 1 •
2018
Here, we present a protocol to image a strawberry plant freezing in 3 dimensions. Two infrared cameras positioned at slightly different angles are used to produce a red-blue anaglyph video to observe the freezing of the plant in 3 dimensions.
FAQs
The cryoprotective medium helps limit damaging ice formation while cells are cooled to very low temperatures. Its effectiveness depends on appropriate exposure before cooling and on maintaining conditions that support later recovery. Optimizing this medium is therefore central to preserving viable samples rather than merely placing cells at a low temperature.
Controlled cooling reduces the risk of damaging ice formation as water within and around cells changes state. The cooling conditions must be selected together with the cryoprotective medium, because both influence whether cells remain viable after storage. A consistent cooling approach also supports reproducibility when samples are prepared for repeated experiments or later use.
Recovery depends on several connected conditions: cryoprotectant exposure, cooling rate, storage environment, storage duration, and thawing procedure. These factors should be considered as one preservation system rather than optimized independently. Monitoring their effects through post-thaw viability helps determine whether the protocol maintains cells well enough for subsequent study or use.
A typical workflow places the cells in a cryoprotective medium, exposes them to controlled cooling, transfers them to long-term storage in liquid nitrogen or its vapor phase, and then thaws them carefully when needed. Each stage has a distinct purpose, and evaluating post-thaw viability provides an outcome measure for the complete workflow.
Thawing is the transition between preserved storage and renewed biological use, so its conditions can affect whether cells recover successfully. A careful thawing step supports post-thaw viability and helps preserve the value of the original sample. This is especially important when cells must return to experiments, disease studies, drug testing, or biotechnology workflows.
Researchers can use preserved primary cells and cell lines to maintain stable research materials across experiments and time. This supports reproducibility by reducing the need to rely on continuously changing sample sources. The approach is relevant to disease research, drug testing, and biotechnology, where consistent biological material can improve comparisons among experiments and future studies.