B2.3.3—Stem cell niches in adult humans
Adult stem cell niches are local tissue environments that maintain stem cells, regulate their division, and control activation or differentiation.
- Syllabus
- First assessment 2025
- Objective
- B2.3.3
- Level
- HL
Concept essentials
- A stem cell niche is a local environment that regulates stem cell behaviour.
- Niches can maintain stem cells in an undifferentiated state.
- Niche signals can activate division and guide differentiation.
- Bone marrow and hair follicle bulge regions are examples of adult stem cell niches.
ConceptIB Biology HL