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This study discovered previously unknown structures in human hair shafts that may stabilize hair structurally and physicochemically.

This study observed unique ultrastructural changes in a 4-year-old girl with pili trianguli et canaliculi that may affect hair shaft surface characteristics due to inner root sheath alterations.

This study concluded that the inner root sheath inhibits the expression of certain differentiation markers in hair bulbs, with calcium-induced changes paralleling those seen in hair follicle mid-segments.

Pili annulati is caused by a protein metabolism disorder affecting hair structure.

This study reports that Ca 2+ binding alters the dynamics and surface properties of PKD-like domains in Clostridium histolyticum collagenases, enhancing their stability and potentially aiding in collagen-targeting vehicle development.

This study found that hyaluronic acid increased the size and cell proliferation of mixed aggregates in a 3D culture model, indicating its role in human hair follicle germ-like structure formation without enhancing dermal papilla cell markers.

This study examined developing hair cortex with electron microscopy and found that keratin fibrils form between specific regions in hair follicles and aggregate into twisted cables.

This study demonstrated that keratin is widely present in various epithelial cells, providing structural strength and potential insights into the origin of cell lines.

This study investigated the interdigital glands in sheep, highlighting their apocrine sweat glands' ultrastructural characteristics and positive lectin reaction, but reported no new clinical results.

This report presents four new cases of follicular porokeratosis, which exhibit distinct histological features where the cornoid lamella are confined to the follicular ostia.

This case report describes a middle-aged woman diagnosed with black piedra of the scalp, confirmed by potassium hydroxide examination and fungal culture.

This overview examines the biology, origin, structure, and function of various cells and structures, such as the blood-retinal barrier and Merkel cells, and discusses their roles in disease pathogenesis, along with recent findings related to the lymph nodes' paracortex.

This study found that cupric chloride treatment may partially correct delayed maturation and abnormal arborization of Purkinje cells in the cerebellum of hemizygous brindled mice, a model for Kinky hair disease.

The study observed that cell spheres formed from mesenchymal cells of newborn mice skin exhibited upregulation of markers linked to hair follicle regeneration, suggesting a potential hibernation-like state for maintaining viability.

This report describes three cases of white piedra of scalp hair, identifying Trichosporon inkin and Trichosporon mucoides as the fungi responsible, which are uncommon causes of this condition.

This study found that sphynx cats exhibit hair follicle dysplasia with abnormal hair shaft production, but without a reduction in the number of follicles, similar to murine KRT 71 mutants.

This case report describes a 29-year-old Japanese man with follicular mucinosis, suggesting nestin-positive, multipotent hair follicle stem cells may be involved in reticular epithelial degeneration of the outer root sheath.

This study identifies specific molecular components involved in the intracellular trafficking of LGR5, revealing mechanisms that differ from typical GPCR recycling processes.

The study concluded that all parts of the normal human Meibomian gland ductal system show signs of early keratinisation, supporting the idea that these glands are akin to "hair follicles without a hair shaft.

In this study, a unique form of chronic superficial pyoderma gangrenosum with verrucous and ulcerative lesions was reported to heal without systemic corticosteroids in most patients.

This article describes a rare case of mixed black and white piedra in a patient's scalp hair, which is unusual as these two types of piedra rarely occur together.

This study observed that innervation of the mystacial pad in rats by fine-caliber axons is more extensive and complex than previously described, with distinct differences in labeling patterns depending on the tracer and survival time.

This study found that RXR and RAR proteins were detectable in normal human skin, suggesting they may play a role in epidermal cell differentiation and hair and gland physiology.

This study investigated NNAT expression in embryonic and postnatal rat tissues, finding its localization in both undifferentiated and differentiated cells across tissues such as the pancreas, tongue, and testis.

This study found that nevoid basal cell carcinomas originate in the epidermis and the upper part of the hair follicle, showing similarities to nonnevoid basal cell carcinomas.

This article discusses the characteristics, clinical presentation, and diagnosis of calcified epidermal cysts but reports no new clinical results.

This study observed that hair follicle cuticular cells undergoing keratinization were significantly thicker than those in a normal hair shaft, due to incomplete loss of cytosol.

Keratin structure changes during keratinization, but the exact model remains uncertain.

This study describes "alarm reaction" histologic changes in pilosebaceous structures, including regression of hair matrix and alterations in sebaceous glands, affecting follicular and sebaceous gland morphology.