The term "G2期" refers to a specific phase in the cell cycle, particularly during the interphase stage. It follows the S phase, where DNA replication occurs, and precedes the M phase, which is when cell division takes place. During G2, the cell continues to grow and prepares for mitosis by producing proteins and organelles necessary for division. In G2, the cell also undergoes critical checks to ensure that DNA has been accurately replicated and that any damage is repaired. This quality control is essential for maintaining genetic stability and preventing errors that could lead to issues such as cancer. Proper functioning of the G2 phase is vital for healthy cell proliferation.