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In this study, researchers observed distinct morphological differences in hair follicles of mutant mouse genotypes, influenced by the expression levels of keratin2-6g, which is essential for proper hair follicle development.

Androgenic alopecia causes hair follicle degradation and skin restructuring, but some hair elements remain.

This study reported that minoxidil affects the physiology of cultured endothelial cells, including reversible suspension of cell proliferation and dose-dependent influence on cell morphology, without significantly altering protein synthesis or inhibiting cell migration.

In this study, UVB exposure was found to alter certain chemical properties of the hair shaft, such as keratin components and water content, without significantly affecting its physical morphology.

In this study, the researchers observed that inducing and then withdrawing β-catenin expression in a bigenic mouse model caused reversible changes in skin morphology, indicating dependence on β-catenin signaling.

This study adapted a method for culturing melanocytes from human hair follicles to horses, successfully creating partially melanotic equine melanocytes, potentially advancing hair follicle biology research across species.

This study observed that melanocytes in the outer root sheath of fetal scalp hair follicles may act as stem cells, showing rapid proliferation but immature function and morphology in culture.

This study observed that undifferentiated matrix cells at the base of the hair follicle differentiate into the medulla, cortex, cuticle, and inner root sheath cell types through specific morphological changes.

This study found that strontium cannot fully substitute for calcium in oat seedling root and root hair growth, though it may help mitigate toxic effects from other ions.

This study reported detailed three-dimensional ultrastructural observations of human hair and hair follicles using a modified preparation method, including morphological differences in hair bulb cell layers and surface projections on root sheath cells.

This study found that isolated hair follicle outer root sheaths from mice can regenerate new dermal papillary structures in vitro, with stem cells and neutrophils playing key roles in the regeneration process.

The new device improves human hair follicle cell growth and differentiation.

This study found that the Nod factor from Rhizobium meliloti, particularly at concentrations of 10-8 and 10-7 M, induced specific membrane depolarization and root-hair deformation in Medicago sativa, depending on the stage of cell differentiation.

This study found that purified humic acids from oxidized coal enhance plant growth by modulating oxidative stress and influencing photobiological processes, with improved root growth and enzyme activity linked to antioxidant and pro-oxidant properties.

This review highlights the role of reactive oxygen species in root hair growth and cell expansion in plants but does not report new empirical findings.

In this study, researchers found that increased hydrogen sulfide levels in Arabidopsis disrupted actin dynamics through S-sulfhydration, leading to the depolymerization of actin filaments and inhibited root hair growth.

In this study, researchers examined the skin of neonatal rabbits and found that most hair follicles were in the terminal stage, with hair shafts protruding through the epidermis, but noted the absence of sweat glands.

The study observed that in women, the number of hair follicles with an internal root sheath decreases with age in the parietal region, also hinting at a reduction in hair follicle and shaft width.

In this study, the researchers optimized a method for culturing melanocyte precursors from hair follicles and found that 1,25-dihydroxyvitamin D3 significantly promotes their differentiation and melanin synthesis.

This study found that combining IGF-1 and EGF in specific concentrations significantly stimulated hair follicle growth in vitro for primary follicles from Liaoning cashmere goats.

This study found that arbuscular mycorrhizal fungus inoculation and shading improved tea seedlings' growth, nutrient absorption, and stress resistance by enhancing root biomass and regulating phytohormone levels and gene expression.

This review discusses recent physiological and genetic advances in understanding tip growth in Arabidopsis thaliana root hairs and reports no new experimental results.

This study identified significant differences in medullary structure, hair length, and root diameter among dorsal guard hairs of red foxes, golden jackals, and gray wolves in Turkey.

This study observed that hair properties vary by ethnicity, influenced by genetic, environmental, and cultural factors, and noted that ethnicity-dependent differences in surface charge and other properties warrant further investigation.

This study identified the TALE homeodomain transcription factor Meis2 as a crucial regulator for the maturation and end-organ innervation of certain mechanoreceptors in mice, with its absence leading to altered sensory neuron structure and impaired touch sensitivity.

This study revisits and reproduces Felix Pinkus' concept of the vitreous membrane in hair follicles, suggesting these structures may play a role in differentiation or nutrition due to their location in metabolically dynamic regions.

Calretinin identifies the companion cell layer in human hair follicles.

This study observed that the catagen phase in hairless mice displayed a slower shortening of the mutant epithelial column, resulting in longer total follicle length and abnormalities in the connective tissue sheath and glassy membrane.

This study found that hair germ and epidermal basal cells differ in keratin expressions in rat hair tissues, with hair-specific keratins appearing after the differentiation of each layer.

This study identified a new type II cytokeratin, named K6hf, exclusively expressed in the companion layer of the human hair follicle, distinguishing it from other keratins and suggesting a unique biochemical role.