Source:http://linkedlifedata.com/resource/umls/id/C1155874
GO: A cell cycle regulatory process that controls cell cycle progression by monitoring the timing and integrity of specific cell cycle events. A cell cycle checkpoint encompasses detection of an event or biological quality, signal transduction, and effector processes that delay or stop cell cycle progression in response to a defect. [GOC:curators, ISBN:0815316194],MSH: Regulatory signaling systems that control the progression through the CELL CYCLE. They ensure that the cell has completed, in the correct order and without mistakes, all the processes required to replicate the GENOME and CYTOPLASM, and divide them equally between two daughter cells. If cells sense they have not completed these processes or that the environment does not have the nutrients and growth hormones in place to proceed, then the cells are restrained (or "arrested") until the processes are completed and growth conditions are suitable.,NCI: Phases or points in the cell cycle at which a cell is prevented from progressing into the next phas