Gilbert, Scott F. [url=https://osusz.to/a-nice-post/265/]https://osusz.to/a-nice-post/265/[/url] (2014). Developmental biology. The cell cycle is regulated by a complex network of cyclins, cyclin-dependent kinases (cdk), cyclin-dependent kinase inhibitors (cdkn), pocket proteins of the retinoblastoma (rb) family and other various auxiliary factors.