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any of a group of proteins that are synthesized in response to hyperthermia, hypoxia, or other stresses and that are believed to enable cells to recover from these stresses, perhaps by enabling recovery of gene expression; occur in prokaryotes and eukaryotes, and at least some proteins are similar in vertebrates and invertebrates.
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family of highly conserved, specific proteins produced by prokaryotic and eukaryotic cells in response to heat shock or other stressor; some may protect other proteins from denaturation or degradation.
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