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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.

Men generally have more severe COVID-19 cases and higher death rates than women due to biological differences.

Foxp3 is crucial for regulatory T cell function, and targeting these cells may help treat immune disorders.

Janus kinase inhibitors are promising treatments for autoimmune skin diseases like eczema and psoriasis.

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

Different PIN proteins affect plant root hair growth by changing how auxin is transported.

Asia has made significant progress in tissue engineering and regenerative medicine, but wider clinical use requires more development.

The document concludes that while significant progress has been made in understanding skin biology and stem cells, more research is needed to fully understand their interactions with their environment.

Scientists turned rat thymus cells into stem cells that can help repair skin and hair.

Lignans and neolignans from plants may help protect against various health issues, including cancer and heart disease.

PDGFA/AKT signaling is important for the growth and maintenance of certain skin fat cells.

New single-cell analysis techniques are improving our understanding of stem cells and could help in treating diseases.

Skin-derived precursors in hair follicles come from different origins but function similarly.

BMP2 and BMP7 have opposite roles in feather formation.

Mice studies show that Protein Phosphatase 2A is crucial for cell growth, development, and disease prevention.

Blocking β-catenin in skin cells improves hair growth during wound healing.

Older adults have a high rate of skin cancers like basal cell carcinoma and melanoma, mainly due to UV exposure and age.

The article concludes that better understanding gene regulation related to seasonal changes can offer insights into the mechanisms of seasonal timing in mammals.

Circadian rhythms are crucial for stem cell function and tissue repair, and understanding them may improve aging and regeneration treatments.

Certain types of T cells are essential for healthy skin and play a role in skin diseases, but more research is needed to improve treatments.

Hair follicle regeneration needs special conditions and young cells.

Certain genes control the color of human hair by affecting pigment production.

Skin has specialized touch receptors that can tell different sensations apart.

White lupin uses specific genes to grow root hairs and access phosphorus when it's scarce.

Muscles and nerves that cause goosebumps also help control hair growth.

New treatments for Alopecia Areata, like JAK inhibitors, show promise for hair regrowth and are likely to change future treatment approaches.

The circadian clock influences the behavior and regeneration of stem cells in the body.

Cells in hair follicles help create fat cells in the skin by releasing a protein called Sonic Hedgehog.

Exosomes from dermal papilla cells help hair growth by making hair follicle stem cells multiply and change.

Short-chain fatty acids from *Cutibacterium acnes* cause skin inflammation, contributing to acne.