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Microneedles improve drug delivery in various body parts, are safe and painless, and show promise in cosmetology, vaccination, insulin delivery, and other medical applications.

Memory regulatory T cells need IL-7, not IL-2, to stay in peripheral tissues.

Vitamin D is important for skin health and may affect conditions like psoriasis and hair loss, but more research is needed to understand its role fully.

Antibiotics can reduce acne but may lead to resistant bacteria, and understanding the skin's bacteria is important for treatment.

Microneedles help improve skin appearance and deliver skin treatments effectively, but safety concerns need more research and regulation.

Inflammation may be linked to hair loss, and targeting specific enzymes could help treat it.

Silver nanoparticles coated with substances like PEG showed strong antibacterial effects and improved wound healing when used in hydrogels.

Obesity is linked to various skin problems and may increase the risk of skin cancer.

The skin's internal clock affects healing, cancer risk, aging, immunity, and hair growth, and disruptions can harm skin health.

Oxidative stress contributes to hair graying and loss as we age.

Men generally have more severe COVID-19 cases and higher death rates than women due to biological differences.

Targeting androgen receptors could be a promising way to treat skin disorders with fewer side effects.

No single treatment is consistently effective for alopecia areata, and more research is needed.

Vitamin D has potential benefits for cancer prevention, heart health, diabetes, obesity, muscle function, skin health, and immune function, but clinical results are mixed and more research is needed.

Rhodococcus equi causes severe pneumonia in young foals, and effective vaccines are needed due to foals' weak immune responses.

The article concludes that the wool follicle is a valuable model for studying tissue interactions and has potential for genetic improvements in wool production.

Adult female acne treatment should be personalized, considering individual preferences and pregnancy, using various topical and oral medications while managing side effects and resistance.

Foals with Rhodococcus equi infection often have other health problems that lower their chances of survival.

The document concludes that understanding the sebaceous gland's development and function is key to addressing related skin diseases and aging effects.

New single-cell analysis techniques are improving our understanding of stem cells and could help in treating diseases.

UV radiation can help sterilize wounds and promote healing but requires careful use to avoid damaging cells.

C60 fullerenes can alter protein function and may help develop new disease inhibitors.

Treating psoriasis on the scalp, nails, and skin folds is challenging, often requiring systemic treatments for severe cases, with some success in topical and biologic treatments.

Fullerenes show potential in skin care but need more safety research.

Hair ages due to genetics and environmental factors, leading to graying and thinning, with treatments available for some conditions.

Mutant CDP/Cux protein causes hair defects and reduced male fertility in mice.

Notch/CSL signaling controls hair follicle differentiation through Wnt5a and FoxN1.

Sensitive skin is often caused by nerve fibers and environmental factors, and can be managed with mild skincare and professional advice.

New nanocomposites with copper show promise for healing burn wounds and regenerating skin.

Microneedling is a safe and effective treatment for various skin conditions, often preferred for its fewer side effects and shorter recovery time.