From: Constraint-based analysis of gene interactions using restricted boolean networks and time-series data
Genes in G1/S* are not regulated by genes in G2/M
Genes in G1/S are not regulated by genes in M
Genes in G2/M are not regulated by genes in G1/S
Genes in G2/M are not regulated by genes in S
Genes in M* are not regulated by genes in G1/S