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This study found that canine demodicosis diagnosis is complicated by the absence of typical lesions and the presence of atypical symptoms like itching and generalized erythema, challenging traditional diagnostic approaches.

This review discusses the adverse effects and societal influence of anabolic-androgenic steroid abuse, emphasizing its severe long-term health risks and calling for increased awareness and regulation; it reports no new results.

In this study, researchers found that the absence of type I or type II keratins in mice leads to severe skin barrier defects, highlighting keratins' crucial role in epidermal structure and function.

This study found that in neonatal mice, the absence of the NG2 proteoglycan leads to reduced epidermal thickness and delayed subcutis thickening due to impaired proliferation and adipocyte deficiencies.

In this study, researchers observed that the absence of a functional vitamin D receptor in mice leads to impaired hair follicle regeneration due to defects in keratinocyte stem cells, resulting in alopecia.

This report describes a child with ulerythema ophryogenes marked by eyebrow hair absence and progressive skin atrophy, whose condition did not improve despite elevated vitamin A levels via injections.

In this mouse study, researchers found that the absence of laminin-511 in skin delays hair follicle development and disrupts hair shaft differentiation, affecting key transcription factors for hair keratins.

In this study, the researchers found that the absence of the NFI-C transcription factor delayed the hair growth cycle in mice by affecting key gene expressions and signaling pathways.

The study suggests that integrin β1 is crucial for maintaining liver microstructure and its absence may promote fibrosis by disrupting hepatocyte-extracellular matrix interactions and increasing TGF-β secretion.

In this study, researchers found that the absence of P-selectin delays inflammatory cell recruitment and reepithelialization in fetal wounds, although scar formation still occurs in later gestation wounds.

In this study, researchers found that the congenital absence of the palmaris longus muscle was relatively uncommon and showed no significant differences according to sex, side, or digit ratio (2D:4D) among individuals assessed using MRI and radiographs.

This study demonstrated that in mice, the absence of Jagged-1 expression in skin-resident regulatory T cells significantly delays wound healing by reducing the accumulation of neutrophils, highlighting the role of Jagged-1 in coordinating immune cell recruitment during injury.

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 study found that finasteride significantly alters urinary steroid profiles, complicating the detection of steroid abuse in doping-control analysis by potentially causing false-negative results.

This research found that Dlx3 plays a central role in hair formation and regeneration, with its absence leading to alopecia through disrupted differentiation and signaling pathways.

This study found that methylation of the 5-AR 2 promoter region may lead to low or absent 5-AR 2 protein expression in some human adult prostate tissues.

In this study, researchers observed that mice with the naked gene showed frequent absence of hair cuticle and cortical cells during follicle growth, with abnormal keratin deposition also noted.

This study describes the presence of holes in hair fibers, absent in hair follicles, likely forming from daily care actions and removal of extractable substances.

This study suggests that the down-regulation of 14-3-3 proteins in wild-type keratinocytes, absent in Smad4 mutant keratinocytes, might contribute to the failure of hair follicles to initiate catagen in Smad4 knockout mice.

This study used ultrahigh-resolution optical coherence tomography to observe hair shaft structures, finding melanin granules absent only in white hair, which may explain color differences between black and white hair.

This study found that lineage-restricted loss of p63 in murine thymic epithelial cells resulted in severe thymic hypoplasia and absence of hair follicles, indicating p63's critical role in thymic and hair follicle development.

This thesis explores the synthesis and antiproliferative properties of phenylpropanoid sucrose esters, noting the absence of synthetic methods for most of this compound class due to their structural complexity.

This study observed that trichoscopy of long-lasting lesions in a chronic stage revealed specific features such as absence of follicular openings, cicatricial patches, and thick arborizing vessels.

This review discusses commonly used dietary supplements for hair growth and highlights the lack of evidence supporting their efficacy and safety in the absence of nutritional deficiency; it reports no new research results.

This study found that ARHGEF3 is crucial for hair follicle development in mice, as its absence leads to defects in placode compaction and impaired follicle downgrowth, highlighting its role in regulating cell shape rearrangements during embryogenesis.

This study found that among patients with systemic lupus erythematosus, the absence of skin rash and low levels of complement C3 were significant risk factors for developing lupus nephritis, with their combination demonstrating good predictive diagnostic value.

In a mouse model study, researchers observed that the absence of MCPIP1 in myeloid cells decreased susceptibility to chemically induced skin papillomas but caused significant hair loss and skin pigmentation changes, suggesting a role for MCPIP1 in skin carcinogenesis and follicle integrity.

This report presents a case of acrodermatitis enteropathica in a 22-year-old female, highlighting the absence of underlying comorbid conditions.

This study found that collagen VI is crucial for peripheral nerve function and regeneration, and its absence promotes abnormal hair regrowth after skin wounding in mice, revealing potential therapeutic targets for nerve injuries and hair loss.

This case report and review discuss hair-thread tourniquet syndrome in a 14-year-old autistic child, highlighting its rarity and the misconception of it being linked to abuse or socio-cultural practices.