A size checkpoint active during cell proliferation ensures that cells reach a certain target size before transitioning into S phase. In this issue of Developmental Cell, Tan et al. identify a… Click to show full abstract
A size checkpoint active during cell proliferation ensures that cells reach a certain target size before transitioning into S phase. In this issue of Developmental Cell, Tan et al. identify a distinct function of cyclin-dependent kinase 4 (CDK4) in determining the target cell size for cell cycle progression.
               
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