Which of the following cells do not divide after differentiation?
Proliferative capacity varies markedly among differentiated tissues, with some lineages retaining ability to re-enter cycle while others become permanently postmitotic. Neurons illustrate irreversible exit: during corticogenesis, progenitor neuroepithelial cells divide, but committed neuroblasts after final mitosis migrate to cortical plate, extend axons and dendrites, and upregulate Cip/Kip inhibitors p27Kip1 and p57Kip2, maintaining retinoblastoma protein in hypophosphorylated state bound to E2F, repressing promoters of cyclins, PCNA, and MCM helicases through transcription factors REST/NRSF
Ref: Becker & Bonni, Progress in Brain Research 2004, Postmitotic Neurons. Alberts 7th ed., Chapter 22.