But previously it has proved impossible to preserve whole organs, because ice crystals form in
the cells during freezing, literally tearing them apart.
Not exact matches
The natural structures that exist either between
cells or within
cells are damaged
during the
freeze - thaw process and hence the flavor or texture of the tissue is altered.
Other plants, such as birches and poplars, also protect themselves by having narrower water transport
cells, which makes the parts of the plant that deliver water less susceptible to blockage
during freezing and thawing.
These
cells stimulated
freezing behavior when artificially activated by light, but did not fire
during natural memory recall.
In addition,
cells frozen during their lifetimes and later returned to an active state had a kind of cellular memory: The
frozen cells picked up right where they left off.
Professionals may not recommend credit
freezes for younger consumers if they are in the process of getting mortgages, taking out loans or lines of credit, or even
during routine things like changing
cell phone service.
The narrow, distorted rings for 536 and 537 indicate a drastic cooling in the northern hemisphere that
froze sap in the
cells during the growing season.
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