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About the cover image: Quorum sensing — whereby cells decide their collective fate on the basis of their population density — is usually associated with bacteria. The cover shows a centimeter-sized colony of mouse cells that began as embryonic stem cells and survived differentiation by quorum sensing at a centimeter scale. Darker regions correspond to denser cell layers (brightfield image, ~1 cm × 1 cm). See Daneshpour et al. (2023) Image by Hirad Daneshpour. |