# Cell cycle - Reference pathway

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- nt06230 Cell cycle
  - N00066 MDM2-p21-Cell cycle G1/S
  - N00090 p15-Cell cycle G1/S
  - N00091 p27-Cell cycle G1/S
- nt06130 Cell cycle (viruses)
  - N00536 MDM2-p21-Cell cycle G1/S
  - N00499 ATR-p21-Cell cycle G2/M
  - N00493 Spindle assembly checkpoint signaling

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  - N00069
  - N00347
  - N00455
  - N00459