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In this study, researchers observed that keratoacanthoma exhibits dynamic follicular differentiation throughout its stages, with changes in specific keratin expressions, and regressed lesions showing epidermal rather than follicular characteristics.

In this study, researchers identified hair follicle stem cells in the bulge region of canine hair follicles, suggesting potential applications for future translational research.

This study found that canine hair follicle stem cells in vitro expressed markers associated with multipotency, suggesting their potential role in the hair cycle.

This study found that trichoblastomas and nodular basal cell carcinomas have similar cytokeratin expression patterns, indicating differentiation towards the outer root sheath epithelium.

This study found that in scarring alopecia, stem cells are differentially localized, suggesting that both inner and outer root sheath stem cells, rather than just follicular bulge stem cells, are involved.

This study suggests that damage to stem cells in the bulge region of hair follicles may contribute to scarring in chronic cutaneous lupus erythematosus.

This study identified specific markers that can distinguish between stem cells in different regions of human scalp hair follicles, offering potential strategies for cell sorting and purification based on these markers.

This study found that activating CB1 receptor signaling in human hair follicles increased stem cell proliferation while reducing differentiated cell survival, suggesting CB1's role as a survival stimulus for epithelial stem cells.

This study found that CK15 is an unreliable marker for assessing bulge zone integrity in cicatricial alopecia follicles due to its altered expression in diseased conditions.

This study suggests that basal cell carcinoma and trichoblastoma may share differentiation toward the hair follicle, as indicated by strong positivity in CK 15, follistatin, and Bmi‐1 markers.

This study found that transient non-lethal levels of endogenous ROS in cultured human hair follicles promoted entry into the growth phase by activating the hair follicle stem cell niche.

This study found that secondary wound healing in the anogenital/inguinal region after surgical intervention for hidradenitis suppurativa/acne inversa occurs significantly faster than in axillary wounds.

Both main and alternative Wnt signaling are important for regrowing rodent whisker follicles.

This study suggests that cutaneous lymphadenoma is a distinct benign lymphoepithelial tumor characterized by androgen receptor expression, hair follicle stem cell markers, and common EGFR gene mutations.

This study found that in identifying bulge stem cells, CD34 is more specific in mice and CD200 in humans, with CD200 potentially marking progenitor and partially differentiated cells.

This study suggests that the epigenetic marker 5-hmC may dynamically influence hair follicle bulge activation during anagen growth in mice, warranting further investigation into its role in stem cell regulation.

This study suggests that Isaria cicadae Miquel rice fermentation extract may enhance regenerative wound healing of hair follicles in mouse skin through the Hippo pathway mechanism.

This study found that Williams' Medium E and a 37°C storage temperature significantly enhanced hair growth in organ cultures compared to Ringer's lactate solution and 4°C, while PRP's impact on hair graft preservation was not significant.

This study found that the expression of CK 15 and CK 19 in vitiligo patients undergoing phototherapy was correlated with improved repigmentation, suggesting their potential as markers for stem cell stimulation.

In this pilot study, researchers observed a correlation between clinical severity and histologic severity of lichen planopilaris, suggesting that an immunohistochemical scoring system could aid in grading disease activity.

The study found that CK15 expression, representing hair follicle stem cell activity, was reduced or absent in scarred primary cicatricial alopecia lesions, suggesting stem cell damage may contribute to the scarring process.

This study found that epithelial stem cells from plucked hair follicles grow optimally when cultured on 3T3 fibroblasts feeders.

This study reports that tissue-engineered skin using ES cell-derived epidermal stem cells and collagen sponge successfully healed full thickness skin defects in mice, forming epidermis and structures resembling glands and hair follicles.

In this study, canine hair follicle stem cells were shown to be multipotent, capable of differentiating into various cell types like adipocytes in vitro.

This study found that the PPARγ modulator NAC-GED-0507-Levo may protect hair follicles from chemotherapy-induced damage, potentially offering a strategy to address irreversible hair loss in cancer patients.

This study reports that androgenetic alopecia patients exhibit reduced CK15 and tropoelastin expression and increased cellular senescence markers, indicating tissue damage in affected hair follicles and surrounding structures.

This study suggests that follicular stem cells in the bulge region are not directly targeted in androgenetic alopecia, based on the consistent presence of cytokeratin 15 across scalp samples from affected patients.

This review discusses the pharmacological actions and potential therapeutic benefits of ginsenoside compound K for metabolic disorders, reports no new clinical results, and suggests further research on its bioavailability and toxicity.

This review discusses the pharmacology and potential therapeutic effects of rare ginsenoside compound K on metabolic disorders but presents no new clinical results, highlighting the need for further studies on its bioavailability and toxicity.

Cytokeratin-15 loss is not specific to any single type of scarring alopecia.