Increasing evidence shows that a very small population of cancer stem cells (CSCs) is responsible for cancer recurrence. drug resistance. and metastasis. CSCs usually reside in hypoxic tumor regions and are characterized by high tumorigenicity. https://www.bekindtopets.com/special-deal-2025-Armada-Tantrum-Junior-Skis-with-Atomic-Colt-7-Bindings-super-save/