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The skin's dermal layer contains true stem cells with diverse functions and interactions that need more research to fully understand.

Scientists can now create skin with hair by reprogramming cells in wounds.

Skin grafts are effective for chronic leg ulcers, especially autologous split-thickness grafts for venous ulcers, but more data is needed for diabetic ulcers.

Buccal mucosa grafts work well for urethroplasty in rabbits.

Using platelet-rich plasma, which is full of growth factors, can help treat pattern hair loss.

Growth factor treatments are increasingly used in medicine but require more research to fully understand their mechanisms.

More research is needed to fully understand the benefits of platelet-rich plasma in medicine.

Chitosan-based dressings reduce inflammation and speed up skin wound healing.

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.

Different types of skin cells play specific roles in development, healing, and cancer.

Blood vessels and specific genes help turn cartilage into bone when bones heal.

Fetal skin heals without scarring due to unique cells and processes not present in adult skin healing.

Activin B improves wound healing and hair growth by helping stem cells move using certain cell signals.

Mouse stem cells from hair follicles can improve wound healing and reduce scarring.

Dermal stem cells help regenerate hair follicles and heal skin wounds.

African spiny mice can regenerate skin, hair, and cartilage, but not muscle, and their unique abilities could be useful for regenerative medicine.

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

Exosomes show promise for future tissue regeneration.

Tiny particles from 3D-grown skin cells speed up wound healing by promoting blood vessel growth.

Henna helps wounds heal faster and better.

Tsukushi helps control inflammation and aids in wound healing.

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

Platelet preparations generally show positive effects on wound healing and facial rejuvenation, but more thorough research is needed to confirm their effectiveness.

Human body's immune cells are more common in the layer of fat just beneath the skin than in deeper fat layers.

Toll-like receptors are important for wound healing, but can slow it down in diabetic wounds.

The hydrogels help harvest cells while preserving their mechanical memory, which could improve wound healing.

Regulatory T cells help heal skin and grow hair, and their absence can lead to healing issues and hair loss.

Scarless healing is complex and influenced by genetics and environment, while better understanding could improve scar treatment.

Mesenchymal stem cells show potential for skin healing and anti-aging, but more research is needed for safe use, especially regarding stem cells from induced pluripotent sources.

Skin cells show flexibility in healing wounds and forming tumors, with potential for treating hair disorders and chronic ulcers.