Which tissue does NOT contain adult stem cells?
Adult or tissue-specific stem cells populate most organs possessing high turnover or regenerative demand, including neural subventricular zone progenitors, hepatic oval cells, muscle satellite cells, and epidermal basal layer keratinocytes. They maintain full genomic complement, DNA repair capacity, and mitotic competence enabling self-renewal. Mature mammalian red blood cells extrude nucleus, ribosomes, and organelles during terminal differentiation steps to accommodate maximal hemoglobin content and enhance vascular deformability. Lacking chromatin, transcription, and division machinery, the
Ref: Gilbert, Developmental Biology, 12th ed., Chapter 18: RBC enucleation terminal differentiation no stem cells.