Table 1.

Stem cell niches which have been studied for their potential to improve tissue regeneration by controlling stem cell behavior.

Tissue/System	Location	Stem Cell Population	Ref
Skin	Hair follicles	Melanocyte stem cells, Hair follicle dermal papilla cells	[21,22]
	Rete ridges	Epidermal stem cells	[23]
		Keratinocyte stem cells	[24]
Hematopoietic system	Bone marrow	Hematopoietic stem cells (HSCs)	[25]
		Mesenchymal stem cells (MSC)	[26]
Small intestine	Epithelium of the small intestine	Intestinal stem cells, non-epithelial stromal cells, myofibroblasts.	[27]
Heart	Epicardial lining	Cardiac stem cells (CSC)	[28]
	Myocardium
Cartilage	Articular cartilage	Bone marrow Mesenchymal stem cells (BMSC), Cartilage-derived mesenchymal progenitors	[29]
Eye	Corneal limbus/Palisades of Vogt	Limbal epithelial stem cells	[30]
Neural system	Subventricular zone	Neuronal stem cells (NSC)	[31,32]
	Hilus of the dentate gyrus	Radial neural stem cells, Dentate gyrus neural stem cells	[33]
Lung	Lung epithelium/tracheal submucosal glands	Basal cells, club cells, and alveolar epithelial cells type II cells.	[34,35]
Primary or permanent teeth	Dental pulp tissue	Human dental pulp stem cells, MSCs, BMSCs.	[36,37]