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High proliferative activity and peripheral invasion indicate malignancy in canine sebaceous gland tumors; the term 'epithelioma' should be updated for clarity.

The document concludes that adult mammalian skin contains multiple stem cell populations with specific markers, important for understanding skin regeneration and related conditions.

Hair growth is influenced by factors like genetics and nutrition, and more research is needed to understand hair loss and growth mechanisms.

Low-oxygen conditions and ECM degradation products increase the healing abilities of perivascular stem cells.

A small group of slow-growing cells causes basal cell carcinoma to return after treatment.

Different types of stem cells with unique roles exist in blood, skin, and intestines, and this variety is important for tissue repair.

Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.

The pituitary gland functions normally even after losing most SOX2+ stem cells.

The document concluded that stem cells are crucial for skin repair, regeneration, and may help in developing advanced skin substitutes.

The protein interleukin-1 alpha helps regenerate hair follicles and increase stem cell growth in mice.

Hair can regrow after certain stem cells are lost because other stem cells can take over their role.

Stem cells help heal skin wounds by moving and changing roles, working with other cells, and needing more research on their activation and behavior.

Changing the environment around stem cells could help tissue repair, but it's hard to be precise and avoid side effects.

Stem cell offspring help control their parent stem cells, affecting tissue health, healing, and cancer.

The niche environment controls stem cell behavior and plasticity, which is important for tissue health and repair.

Stem cell plasticity is crucial for wound healing but can also contribute to cancer development.

The conclusion is that tissue structure is key for stem cell communication and maintaining healthy tissues.

In vivo lineage labelling is better than in vitro methods for identifying and understanding stem cells.

Stem cell self-renewal is complex and needs more research for full understanding.

The document concludes that stem cell inactivity is actively controlled and important for tissue repair and balance.

TGF-β signaling is crucial for stem cell maintenance, differentiation, and has implications for cancer treatment.

Understanding where cancer cells come from helps create better prevention and treatment methods.

Different small areas within hair follicles send specific signals that control what type of cells stem cells become.

Skin fat has important roles in hair growth, skin repair, immune defense, and aging, and could be targeted for skin and hair treatments.

PRC2 is essential for maintaining intestinal cell balance and aiding regeneration after damage.

GDNF helps grow hair and heal skin wounds by acting on hair stem cells.

Fibroblasts are crucial for tissue repair and inflammation, and understanding them can help treat fibrotic diseases.

Epithelial stem cells can adapt and help in tissue repair and regeneration.

Krt15+ cells in the mouse intestine resist radiation and can start tumors.

Inactive stem cells in hair follicles and muscles can avoid detection by the immune system.