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Retinoic acid production and signaling in hair follicles are regulated by location and timing, affecting hair growth and cycling.

Epithelial-mesenchymal interactions control hair growth cycles through specific molecular signals.

Different processes create patterns in skin and things like hair and feathers.

Advancements in hair biology include new treatments and tools for hair growth and alopecia.

Hair, teeth, and mammary glands develop similarly at first but use different genes later.

The new 3D system helps test hair growth treatments effectively.

Adult hair follicle cells can create new hair follicles from corneal cells with the right support.

The document concludes that while lab results for hair growth promotion are promising, human trials are needed and better testing methods should be developed.

Dermal papilla microtissues could be useful for initial hair growth drug testing.

Hair and skin healing involve complex cell interactions controlled by specific molecules and pathways, and hair follicle cells can help repair skin wounds.

Most vertebrates can regenerate skin, nails, and corneas, but only some can regenerate teeth and lenses.

Hair follicle development involves complex interactions between skin layers and cells, but many details are still unknown.

Hair color is influenced by genetics and can indicate certain health conditions.

Retinoic acid helps change skin cells and is important for skin development and hair growth.

Human hair follicles switch between active and resting phases unpredictably.

Hair follicle development is controlled by interactions between skin tissues and specific molecular signals.

Certain chemicals and peptides can promote hair growth or prevent baldness.

Androgens can both increase and decrease hair growth in different parts of the body.

BMPs are crucial for hair growth and their decrease by androgens leads to hair loss.

Adding hyaluronic acid helps create larger artificial hair follicles in the lab.

Bone Morphogenetic Proteins (BMPs) are important for hair growth, and their decrease due to hormones could lead to hair loss, but adding more BMPs could promote hair growth.

Activating Wnt in skin cells controls the number of hair follicles by directing cell movement and fate.

Growth factors are crucial for hair development and could help treat hair diseases.

Scientists have developed a new method using stem cells to grow and transplant hair follicles, which could be useful for hair regeneration treatments.

Keratin protein production in cells is controlled by a complex system that changes with cell type, health, and conditions like injury or cancer.

Red light promotes hair growth by directly stimulating hair cells and improving cell communication.

Grafted rodent and human cells can regenerate hair follicles, but efficiency decreases with age.

Scientists have found a way to create hair follicles from skin cells of newborn mice, which can grow and cycle naturally when injected into adult mouse skin.

Different small areas within hair follicles send specific signals that control what type of cells stem cells become.

Blocking a specific protein signal can make hair grow on mouse nipples.