Hair morphology differs dramatically between human populations: people of East Asian ancestry typically have a coarse hair texture, with individual fibers being straight, of large diameter, and cylindrical when compared to hair of European or African origin. Ectodysplasin-A receptor (EDAR) is a cell surface receptor of the tumor necrosis factor receptor (TNFR) family involved in the development...

Histone deacetylases (HDACs) are present in the epidermal layer of the skin, outer root sheath, and hair matrix. To investigate how histone acetylation affects skin morphogenesis and homeostasis, mice were generated with a K14 promoter-mediated reduction of Hdac1 or Hdac2. The skin of HDAC1 null (K14-Cre Hdac1(cKO/cKO)) mice exhibited a spectrum of lesions, including irregularly thickened inter...

Biotinylated dextran amine (BDA) was used to retrogradely label afferents innervating the utricular macula in adult pigeons. The pigeon utriclar macula consists of a large rectangular-shaped neuroepithelium with a dorsally curved anterior edge and an extended medioposterior tail. The macula could be demarcated into several regions based on cytoarchitectural differences. The striola occupied 30%...

In this paper we propose a new method for stable numerical integration of the dynamic Cosserat equations for rods, which constitute a mechanical framework for the physically based modeling of slender structures like DNA strands, drill strings, marine cables or human hair. Our integration method is well-established in the field of structural dynamics and has the major advantage of unconditional ...

the aim of this study was to determine the effect of age on fiber characteristics of one-humped female camels of semnan province. 50 grams of wool samples from the left midside area were randomly collected from 28 camels of three different age groups: young, adult and old and fibre characteristics were measured. statistical model used for this research was completely randomized design (crd). an...

The quality of cotton fiber is determined by its final length and strength, which is a function of primary and secondary cell wall deposition. Using a comparative proteomics approach, we identified 104 proteins from cotton ovules 10 days postanthesis with 93 preferentially accumulated in the wild type and 11 accumulated in the fuzzless-lintless mutant. Bioinformatics analysis indicated that nuc...

Primary pulmonary teratoma is a very rare disease. Most follow a benign course and are incidental findings during routine chest X-rays. Hair found in sputum or in bronchus detected during bronchoscopy is also a rare condition and is usually caused by mediastinal teratoma. This case report is of a 36-year-old man who presented with halitosis. A fiber-optic bronchoscopy revealed coarse hair origi...

Dry friction between hair fibers plays a major role in the collective hair dynamic behavior as it accounts for typical nonsmooth features such as stick-slip instabilities. However, due the challenges posed by the modeling of nonsmooth friction, previous mechanical models for hair either neglect friction or use an approximate smooth friction model, thus losing important visual features. In this ...

BACKGROUND Reconstructive hair fibers are an innovative tool in cosmetic dermatology based on electrostatic adherent powder which bonds to the hair shaft and can disguise hair loss in men and women. AIM This study aims to analyze and compare five different brands of organic hair fibers. MATERIALS AND METHODS A scanning electron microscope (SEM) was used to obtain amplified images of samples...