Zebrafish Keep Their Cool

Cell plasma membranes contain a complex assortment of lipids. This mixture is metabolically tuned to respond to changes in environmental conditions, but the specific biological function of lipid adaptation is not understood. In their newest article, Burns et al. (1) address this longstanding question with experimental evidence that cells alter their lipid composition to maintain a constant difference between the growth temperature and the temperature at which their membranes separate into coexisting liquid phases.

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