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Deleting the PTEN gene in mice causes nerve cells to grow larger and heal better after injury, but may cause overgrowth and hair loss in older mice.

Copper injections improved symptoms and prevented brain damage in brindled mice.

Hair follicle stem cells can become different cell types and may help treat neurodegenerative disorders.

Sensory neurons and Merkel cells remodel at different rates during normal skin maintenance.

Peptide hydrogels show promise for healing skin, bone, and nerves but need improvement in stability and compatibility.

4-aminopyridine, a FDA-approved drug, speeds up skin wound healing and tissue regeneration.

Nestin-expressing hair follicle cells may be useful for nerve repair and regeneration.

G2 stem cells control calcium signaling for skin regeneration.

Chick embryo extract helps rat hair follicle stem cells become more like neurons.

Blocking IL-17a can improve age-related smell loss in mice.

Blue-light activation of TrkA improves hair-follicle stem cells' ability to become neurons and glial cells.

Certain proteins help nerve cells branch, and other findings relate to cancer, stem cell behavior, and cell division.

HBCs in the olfactory epithelium can self-renew or differentiate into other cell types, with specific patterns during regeneration.

Androgens help motor neurons grow by increasing neuritin.

Remote photobiomodulation improves brain injury outcomes and behavior in rats.

Calotropis gigantea leaf extract causes significant tissue damage and stress in fish.

Epigenetic factors affect the success of using iPSC-derived cells for spinal cord injury treatment.

4-aminopyridine helps skin wounds heal faster and better.

Hair-follicle stem cells can become neurons.

The olfactory epithelium can regenerate throughout life, aided by specific cells, genes, and new research methods.

Nerves are crucial for the regeneration of various body parts in many animals.

Wnt/beta-catenin signaling in the skin helps fat cell development during hair growth and repair.

Tooth regeneration could become possible by controlling how and when bioactive factors are released.

Liposomal carriers can improve tissue regeneration by stabilizing and retaining growth factors.

The PP2A-B55α protein is essential for brain and skin development in embryos.

Exosomes show promise for future tissue regeneration.

The document concludes that while some organisms can regenerate body parts, mammals generally cannot, and cancer progression is complex, involving mutations rather than a strict stem cell hierarchy.

Hair follicle stem cells help skin heal and grow during stretching.

The document suggests that activating autophagy might help with regeneration by removing old and damaged cells.

Exosomes help nerve fibers grow by affecting specific cell signaling pathways.