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Chickens exposed to loud noise can quickly regain hearing mostly due to repair of the tectorial membrane, not just hair cell regeneration.

Retinoic acid causes gland formation instead of hair in mouse skin by altering epidermal and dermal interactions.

RANK-RANKL signaling is essential for hair growth and skin health.

Combining 3D bioprinting and single-cell RNA sequencing improves skin regeneration.

Mechanical stretching can promote hair growth by activating certain immune cells.

BMP2 needs periosteal tissue to help regenerate mouse middle finger bones within a specific time.

Improving dermal papilla cells can help regenerate hair follicles.

Rat hair follicle stem cells can become corneal epithelium-like cells when exposed to rabbit corneal limbal stroma.

Using platelet rich fibrin speeds up wound healing after revascularization.

Wnt and Notch pathways are crucial for repairing blood stem cells after damage.

Using certain small proteins with a growth factor and specific materials can increase the creation of neurons from stem cells.

SMAD4 is crucial for muscle repair in young adults but not in aged mice.

Adipose tissues and platelet-rich plasma help tissue repair and healing in surgery.

Whiskers can form without sensory nerves or Foxd1, thanks to Meis2 in mesenchymal cells.

Minor injuries to hair follicles can stimulate hair growth in mice by increasing a specific protein.

Hox genes control hair follicle stem cell regeneration in different body regions.

Injecting a person's own fat stem cells into their skin can make it look younger and improve double eyelids for over a year.

Removing the p75 gene in mouse skin cells didn't affect their skin or hair growth.

Reprogramming adult fibroblasts may enable scar-free healing.

The method effectively analyzes skin tissue changes, especially in the arrector pili muscle and nerve fibers with hair follicles.

Stress and certain chemicals affect hair growth by interacting with the immune and nervous systems.

The snail flap technique is an easy, reliable, and hair-preserving method for scalp reconstruction, especially good for elderly or frail patients.

Implanted dermal papillae can induce hair growth in rat ear wounds.

Printing human stem cells and a special matrix during surgery can help grow new skin and hair-like structures in rats.

Platelet-derived chemokines help muscle healing by attracting neutrophils to injured areas.

Angio PRP speeds up skin wound healing and reduces inflammation.

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.

Ring block anesthesia is the best method for PRP scalp injections due to low pain and high patient acceptance.

Hair follicle cells can become bone-like cells, useful for bone repair.

Transcranial electrical stimulation with bisphosphonates helps maintain bone collagen better than bisphosphonates alone.