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Across 2. A signalling protein in mammalian cells 5. After interphase, cell enters mitosis 8. Cell recovery from the previous division 9. Family of internal signalling proteins 10. Cell self-destruction 11. The number of stages in the cell cycle 12. A protein for interpreting growth and nutrient signals

Down 1. Finishing replication and beginning mitosis 3. After the G1 Stage, synthesis/replication happens 4. "Body" cells 6. The longest part of the cell cycle 7. Set of stages during the growth and decay of a cell