We argue that irreversible transitions in the cell cycle (or in any other molecular control system) cannot be attributed to a single molecule or reaction, but that they derive from feedback ...

To understand such a complex system we will have to develop a new approach that will allow us to integrate the multitude of signal transduction pathways that control the cell cycle. Mathematical ...

The first part of the system is 3D, time-lapse microscopy ... Through statistical analysis of individual cell cycles in wild type embryogenesis, we found that the pace/length of cell cycle is under ...

The following diagram illustrates the menstrual cycle. It also shows the changing levels of the two hormones involved in the process. The menstrual cycle usually lasts approximately 28 days.