The Pathway Ontology (PW), is currently being developed at the Rat Genome Database. For more information about this vocabulary, please see Petri et al. The rat genome database pathway portal. Database (Oxford). 2011 Apr 8;2011:bar010. Print 2011 or contact us (http://rgd.mcw.edu/contact/index.shtml).
The series of events underlying the progression of the early cell cycle into the G phase and under the control of D-type cyclins together with Cdk4 and Cdk6. The formation of the pre-initiation replication complex takes place during this phase.