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Auxin and ethylene hormones both work together and against each other to control plant growth.

Stem cell niches are crucial for regulating stem cell behavior and tissue health, and their decline can impact aging and cancer.

β-catenin in the dermal papilla is crucial for normal hair growth and repair.

Anticancer drugs are increasingly found in surface waters, and their long-term environmental effects are not well understood, requiring better testing methods.

Human skin makes sexual hormones that affect hair growth, skin health, and healing; too much can cause acne and hair loss, while treatments can manage these conditions.

Stem cell-derived conditioned medium shows promise for treating various medical conditions but requires standardized production and further validation.

Certain proteins, Lgr5 and Lgr6, are important markers of adult stem cells and are involved in tissue repair and cancer development.

TRPA1 is crucial for mechanical sensitivity in skin sensory neurons.

The skin's layers protect, sense, and regulate the body's internal balance, but can be prone to cancer.

Removing part of the vitamin D receptor stops vitamin D from working properly.

Some drugs can cause rare but potentially deadly skin reactions, and early treatment and avoiding the drug again are key.

Wnt signaling is crucial for skin development and health, and its disruption can cause skin diseases.

Mutations in the SRD5A3 gene cause a new type of glycosylation disorder by blocking the production of a molecule necessary for protein glycosylation.

Exposure to too much androgen before birth might cause polycystic ovary syndrome later in life.

Apoptosis is essential for human skin development and forming a functional epidermis.

The immune system plays a key role in tissue repair, affecting both healing quality and regenerative ability.

TGF-β is crucial for tissue repair and can cause diseases if not properly regulated.

Hair loss and aging are caused by the breakdown of a key protein in hair stem cells.

Melanocyte stem cells in hair follicles are key for hair color and could help treat greying and pigment disorders.

Fat cells help recruit healing cells and build skin structure during wound healing.

Future hair loss treatments should aim to extend hair growth, reactivate resting follicles, reverse shrinkage, and possibly create new follicles, with gene therapy showing promise.

AGA causes hair loss by shrinking hair follicles due to DHT binding, and can be treated with finasteride and minoxidil.

Some patients taking finasteride or dutasteride may have ongoing sexual problems and depression even after stopping the medication.

Eph receptors and ephrins may be promising targets for treating diseases, but more understanding is needed for effective and safe therapies.

Insulin resistance and obesity are key factors in the development and worsening of polycystic ovary syndrome, and lifestyle changes are important for managing it.

The document concludes that the 5 alpha-reductase enzymes are important in steroid metabolism and related to various human diseases, with inhibitors used to treat conditions like male pattern baldness and prostate issues.

Hair follicles help absorb and store topical compounds, aiding targeted drug delivery.

Hair color production in mice is closely linked to the hair growth phase and may also influence hair growth itself.

Stem cell niches are crucial for regulating stem cell renewal and differentiation, and understanding them can help in developing regenerative therapies.

The cuneate nucleus has two main neuron types: relay neurons and interneurons.