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This study found that the extraction-resistant structures in hair, feathers, and hagfish teeth are due to ε-(γ-glutamyl)lysine cross-linked proteins, emphasizing their role in maintaining the integrity of these materials.

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 report describes a rare case of tumoral calcinosis presenting as a slow-growing mass on the scalp in an Afro-Caribbean man, with histopathology revealing calcium deposits and associated tissue changes.

This article reports electron microscope studies on the structure of hair and wool, but it does not present new clinical findings.

This study found that keratin intermediate filaments in the hair of GAN patients are altered, showing decreased diffraction signals and increased stiffness, strength, and extensibility.

This study reports that normal scalp and hair in Black Africans exhibited regular white dots and a preserved honeycomb pattern, with some showing peripilar casts and scales.

This study seeks to clarify the terminology and classification of keratoacanthoma and similar squamous cell carcinoma lesions with central keratin-filled craters to aid in accurate differential diagnosis.

This study introduces the term "hair matrix cyst" for a cyst with both pilomatricoma and epidermal cyst characteristics, highlighting its potential for misdiagnosis among similar skin conditions.

In this study, researchers found that papain-treated or mechanically altered Asian scalp hair fibers allowed for spontaneous ion movement and anthocyanin dye flow through the medulla tube, with dye flow enhanced by applied DC voltage.

In this study, researchers observed that P2X3-immunoreactive fibers extensively innervate the epidermis of rats, suggesting a primary role in detecting noxious stimuli in cutaneous tissue.

This study found that "early" transit amplifying cells, marked by CD271, are the first keratinocyte stem cell progenitors with distinct features, playing a significant role in early epidermal differentiation and regeneration.

This study suggests that spiny keratoderma may be an ectopic hair formation on palms and soles, based on keratinization patterns observed using antikeratin antibodies and electron microscopy.

This case report describes a rare instance of melanocytic matricoma, a benign pigmented papule found in sun-damaged skin of an elderly individual, highlighting its distinct clinical and pathological features.

This report describes four cases of monilethrix in children and concludes that periodic inhibition of keratin synthesis, not a metabolic defect, may explain the hair abnormality.

This study concluded that terminal Schwann cells are essential for the maintenance and regeneration of mechanosensory lanceolate complexes at hair follicles in adult mice.

This study reports two cases of trichoblastic neoplasms with histologic features suggesting they may be distinct, locally aggressive trichoblastic carcinomas separate from basal cell carcinoma.

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 found that RAR-gamma 1 mRNA is present in multiple skin layers and structures, suggesting a role in maintaining and differentiating normal epidermis and skin appendages.

The study improved understanding of keratin fiber structure by showing consistent microfibril diameter but varying distances and electron density profiles.

This study found that monoclonal antibodies identified distinct staining patterns in benign and malignant skin appendage tumors, highlighting their potential as markers for analyzing skin tumors.

This study found that a patient with giant axonal degeneration had unique hair abnormalities such as trichorrhexis nodosa and altered S:N ratios, unlike her relatives but comparable to unrelated controls.

This study provided new insights into the complex and heterogeneous architecture of keratin filaments, revealing their dynamic and flexible structure through cryo-electron microscopy analysis.

The researchers reported that BCE-like changes overlying dermatofibroma show a differentiation pattern most similar to normal basal cells based on specific keratin markers.

Granulomatous alopecia may be a distinct subtype of alopecia areata.

Repetin is a protein involved in skin and hair development, binding calcium and compensating for other proteins when needed.

This article reviews confocal microscopy findings in trichoepithelioma and desmoplastic trichoepithelioma, noting similarities with histological features, but it provides no new clinical results.

RAPK is a rare skin disorder with pigmented spots, mainly on hands and feet, starting in youth.

This study observed that buffalo teats have a melanin-rich epidermis, no hair follicles, and a complex structure with specific epithelial and muscular characteristics.