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Injectable hydrogels are becoming increasingly useful in medicine for drug delivery and tissue repair.

Biomimetic scaffolds are better than traditional methods for growing cells and could help regenerate various tissues.

Self-assembling RADA16-I hydrogels with bioactive peptides significantly improve wound healing.

Aging reduces skin stem cell function, leading to changes like hair loss and slower wound healing.

Neurotoxins can affect neurotransmitter release and have potential in treating muscle, pain, and cancer conditions, but more research is needed on how they work.

*Acorus calamus* has many medicinal benefits but needs more safety research.

Rat whisker cells can help turn other cells into nerve cells and might be used to treat brain injuries or diseases.

Nerve growth factor helps improve healing time and scar quality in burn wounds.

Hair follicles repair 3D injuries using a 2D healing process.

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.

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

Hormones significantly affect women's sexual function, and more research is needed to improve treatments for sexual dysfunction with minimal side effects.

Mouse skin glands need healthy nerves to grow properly during hair growth phases.

Facelift surgery has evolved to focus on natural results and safety, with patient selection and postoperative care being key to success.

Chemotherapy can cause brain inflammation and damage, and understanding this process could help manage side effects.

Photobiomodulation therapy using red and near-infrared light can reduce inflammation and aid in healing various conditions.

Epidermal stem cells could lead to new treatments for skin and hair disorders.

Mice that can regenerate tissue have cells that pause in the cell cycle, which is important for healing, similar to axolotls.

Using anabolic androgenic steroids can cause serious, lasting health problems in many parts of the body.

The study found no significant difference in stress hormone levels between people with alopecia areata and healthy individuals, suggesting that the disease is not caused by an overactive stress response system.

The document concludes that better targeted treatments are needed for wound healing, and single-cell technologies may improve cell-based therapies.

New treatments for skin and hair repair show promise, but further improvements are needed.

Transplanted rat hair follicles grew hair and had increased but not fully restored nerve connections in mice.

Some patients using cold caps to prevent hair loss from chemotherapy got mild scalp injuries similar to frostbite.

The conclusion is that understanding how hair follicle stem cells live or die is important for maintaining healthy tissue and repairing injuries, and could help treat hair loss, but there are still challenges to overcome.

Skin stem cells interacting with their environment is crucial for maintaining and regenerating skin and hair, and understanding this can help develop new treatments for skin and hair disorders.

Sensory neuron and Merkel cell changes in the skin happen independently during normal skin maintenance.

PRP shows promise in healing but needs a standardized, safe preparation method.

The review concluded that reporting on PRP therapy is often incomplete, leading to uncertainty about its effectiveness.

The review concludes that innovations in regenerative medicine, tissue engineering, and developmental biology are essential for effective tissue repair and organ transplants.