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This study detailed the skin structure of Chegu goats, highlighting the presence of two types of hair follicles, with primary follicles associated with sweat glands and other structures.

Targeting drugs to hair follicles can treat skin conditions, but reaching deep follicle areas is hard and needs more research.

In this histopathology study of nevus sebaceus, researchers observed distinct epidermal, sebaceous, follicular, and apocrine changes, including sebaceous hyperplasia and basaloid adnexal proliferation, which help differentiate it from similar conditions like basal cell carcinoma and trichoblastoma.

This study found that while porcine skin resembles human skin, there are significant regional differences in skin composition and morphology, which could affect its use as a human analogue in research.

This study by Bansaccal et al. found that skin with higher levels of type I collagen density and elasticity in the dermis can inhibit basal cell carcinoma development and spread by acting as a natural barrier against cell reprogramming in mice.

This study found that systemic testosterone exposure in transgender individuals with XX genotype alters skin biology, increasing androgen and estrogen receptor-positive cells, collagen density, and fibronectin expression while reducing immune cells, which could affect surgical outcomes by promoting a male skin phenotype.

In this mouse study, researchers found that dermal Wnt signaling/β-catenin activity is essential for fibroblast proliferation and initiating hair follicle formation by interacting with epidermal Wnt ligands.

IL-13 protein is much higher in the skin of atopic dermatitis patients than in healthy skin.

Artificial dermis used for hair transplantation can reconstruct scalp defects effectively without the need for tissue expansion.

This study reported the successful isolation of epithelial stem cells from mouse embryonic skin using a simple culture method, with the cells showing the potential to differentiate into multiple cell types.

This study found that age and follicular miniaturization were extremely weak predictors of total hair count in women with hair loss.

This study found significant differences in hair density, non-vellus hair diameter, and percentage of miniaturized hair between normal women and those with female pattern hair loss, particularly in the midscalp and parietal areas.

This study generated FGF5-knockout Dorper sheep using the CRISPR/Cas9 system, resulting in significantly increased fine-wool and active hair-follicle density, and explored downstream signaling pathways for potential applications in androgen alopecia treatment.

This study found that follicular density and various hair growth ratios differ statistically between nonscarring and scarring alopecia, though significant overlap exists due to factors like sample size and scalp variation.

This study suggests that PDCD4 regulates keratinocyte proliferation and contact inhibition, playing a role in epidermal homeostasis and wound healing.

The author believes artificial dermis might not be the best first option for hair transplant surgeons when other surgical choices exist for scalp reconstruction.

This study observed that white females with Ludwig I female pattern hair loss had higher hair density on the occipital scalp, whereas Asian females had thicker hair diameters in both frontal and occipital areas.

Early stage bald spots are linked to skin inflammation and damage to the upper part of the hair follicle.

This study found that new methods for isolating human dermal papilla cells were more efficient than traditional methods, maintaining higher levels of specific markers and improving the cells' research potential.

This study reports that extracellular microvesicles isolated from stimulated dermal fibroblasts enhanced hair follicle growth ex vivo and identified norrin as a novel modulator in hair regeneration processes.

This study found that radiation negatively impacts the survival and proliferation of fibroblasts on human dermis transplants, but hair follicle pores enhance cell viability even after irradiation.

In this animal study, researchers found that exposure to a CO2 laser at various power levels caused significant skin damage in rats, including severe burns, coagulation, and tissue obliteration, with higher laser doses resulting in more pronounced injuries.

The authors concluded that the dermal response to epidermal Wnt/β-catenin signaling depends on distinct fibroblast lineages, with each responding to different paracrine signals such as Hedgehog and TGF-β.

This research found that feather pattern formation in birds is regulated by a mechanochemical system involving fibroblast growth factor and bone morphogenetic protein signaling, which is altered in the flightless emu and ostrich.

This study in Hexi cashmere goats found that secondary follicle activity increases with time, and Hoxc13 expression varies significantly across different growth stages, suggesting a role in follicle activity.

This study found that activating the Sonic hedgehog pathway in scarring wounds can redirect wound repair to favor hair follicle regeneration instead of fibrosis.

Sericin hydrogels heal skin wounds well, regrowing hair and glands with less scarring.

In this pilot study, combined platelet-rich plasma therapies showed potential benefits for improving skin elasticity and vascular network density in morphea patients, but the small sample size limits definitive conclusions.

This study discusses how hair characteristics, such as color, thickness, and volume, change with age and hormonal factors, affecting perceived age, and introduces concepts of hair aging and the nuanced diagnosis between androgenic and senile alopecia.

This review suggested that low-level light therapy using red/near-infrared light could be a safe and effective treatment for various skin and hair conditions, though more robust trials are needed to solidify its clinical utility.