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This study observed that epidermal growth factor and fibroblast growth factor have distinct roles in sheep skin, with EGF involved in differentiation and FGF in bulb proliferation and fiber growth.

This article discusses various skin pattern formations, their molecular mechanisms, and highlights the need for further understanding to connect molecular biology with organism phenotypes, without providing new clinical findings.

This animal study found that dermal papilla cells in hair follicles of chimeric mice can originate from various fibroblasts in the skin, challenging assumptions about their specific lineage.

This review discusses the latest understanding of androgenetic alopecia, including stem cell niches in hair follicles, and highlights emerging treatments like growth factors and platelet-rich plasma without new clinical findings.

This review discusses emerging targets for developing drugs to treat hair loss and reports no new clinical results; the authors emphasize the potential for therapies that regenerate hair follicles.

This study reports that BMP2 expression in goat skin is higher during late telogen and early anagen phases, indicating a potential role in hair follicle regeneration.

This study found that male and female chicken feather morphology and color patterns can be extrinsically modified through molting and resetting the stem cell niche during regeneration.

This study reports that Wise is expressed in specific patterns during the morphogenesis of chick embryos, particularly in regions associated with known signaling molecules like Wnt, Bmp, and Shh.

In this study, researchers propose that different vertebrate skin appendages, such as hair, feathers, and scales, evolved in parallel from a shared ancestral cell structure associated with teeth, dating back approximately 420 million years ago.

In this study, researchers used embryonic chicken skin as a model to show that perturbing calcium signaling can induce feather bud formation in areas that typically do not form them, highlighting developmental bioelectricity as a crucial yet underexplored layer in tissue patterning.

Cell movements and forces shape feather growth in chicken skin.

In this mouse study, the absence of the Ascl4 gene did not affect the development of hair follicles, teeth, or mammary glands, suggesting it is non-essential for these processes.

This review discusses spatial and temporal patterns in animals, focusing on skin appendage organs, but provides no new research findings.

Different types of long-lasting stem cells are responsible for the growth and upkeep of the mammary gland.

This study found that micro-niches within hair follicles create heterogeneity among stem cells and transit-amplifying cells, leading to specialized progenitors that control tissue morphogenesis and regeneration.

This study found that continuous expression of epidermal growth factor in transgenic mice prevented hair follicles from entering the catagen phase, implicating EGF as a crucial regulator in hair cycle progression.

This study found that Akt2 and SGK3 are crucial for postnatal hair follicle development in mice, as their combined absence led to severe hair growth defects due to disrupted β-catenin-dependent transcriptional processes.

This study provides a comprehensive framework for understanding, managing, and addressing skin fibrosis, highlighting common pathways and new therapeutic opportunities for various fibrosis-related disorders that currently lack effective treatments.

In this study, in ovo injection of CHIR-99021 promoted the morphogenesis and development of feather follicles in chick embryos by activating the Wnt/β-catenin signaling pathway.

This study found distinct expression patterns of various transcription types during hair follicle morphogenesis, providing a foundation for understanding hair development mechanisms and aiding selective breeding for desirable wool traits in a specific breed.

This study found that during hair follicle morphogenesis in embryos, the expression pattern of the Hoxc13 gene and skin thickness show similar trends, suggesting possible regulatory mechanisms within Hoxc13 intron regions.

This study demonstrates that using transwell culture significantly influences hair follicle formation in skin models, potentially improving dermatology and skin research methodologies.

This study reports that the maintenance and morphogenesis of skin appendages rely on both the dose and duration of ectodysplasin signaling.

This review discusses the anatomy and gene involvement in the development of animal hair follicles and reports no new experimental results; it calls for continued examination of gene roles in hair quality.

This study found that both subclinical and overt maternal hypothyroidism during pregnancy and lactation caused significant damage to the skin development of rat offspring, including pronounced hyperkeratosis and reduced hair follicle formation, with more severe effects observed in overt hypothyroidism.

This review discusses recent advancements in understanding how the extracellular matrix regulates epidermal stem cell fate and highlights the significance of ECM in stem cell maintenance and differentiation, with implications for regenerative medicine.

This study examined the cytodifferentiation stage of hair follicle development in cashmere goats, identifying nine cell populations and key regulatory pathways, including transcription factors and keratin genes, that may influence fiber quality and inform breeding strategies.

This study found evidence of Demodex mite involvement in the formation of horn cysts within eyelid papillomas, suggesting a role for the mite in tumor morphogenesis.

In this review, researchers highlighted the prevalence of hereditary hair diseases in the Japanese population, emphasizing the significant impact of LIPH gene variants on autosomal recessive woolly hair and the importance of continued research to better diagnose and manage these disorders.

Sox13 is a new marker for early hair follicle development and differentiation.