TOPICS: Cell cycle phases, G0 phase, G1 phase, S phase, G2 phase, mitosis (M), prophase, chromosomes, spindle fibers, metaphase, anaphase, telophase, daughter cells, cell types, permanent cell, stable (quiescent) cell, labile cell, cytokinesis, growth, DNA synthesis, cell cycle regulation, cyclins, cyclin dependent kinases (CDKs), cyclin-CDK complex, phosphorylation, retinoblastoma protein (Rb), transcription factor, E2F, cellular division, cell cycle progression, cyclin D1, mantle cell lymphoma, retinoblastoma, Li-Fraumeni syndrome, p53, osteosarcoma, regulation of G1/S phase transition