Here we present the case of a 36-year-old man who was found to have a symptomatic malignant neural sheath tumor growing from the C2 nerve root following a period of progressively worsening headaches. The patient was successfully treated with surgical resection resulting in resolution of cranial nerve deficits. Though uncommon, malignant peripheral nerve sheath tumor must be considered in the di...

Trichohyalin is a structural protein that is produced and retained in the cells of the inner root sheath and medulla of the hair follicle. The gene for sheep trichohyalin has been purified and the complete amino acid sequence of trichohyalin determined in an attempt to increase the understanding of the structure and function of this protein in the filamentous network of the hardened inner root ...

The hair follicle represents a very attractive organ system for studying the precise balance between cell proliferation, growth, differentiation, and death of cells, because it periodically and regularly regenerates, retaining its morphogenetic signals throughout its life. One of the most intriguing oncogenes which is able to induce both cell growth and apoptosis, depending upon the environment...

On numerous occasions duriog examination of material taken from suspected cases of tinea capitis, spindle-shaped cells have been noted along the shafts of both infected and uninfected hairs. These cells usually are attenuated at both ends and occasionally are marked by transverse striations. Superficially they bear some resemblance to the macroconidia produced in culture by Microsporuni cenis, ...

Root growth through biopores is facilitated by low mechanical impedance and nutrient enrichment due to the deposition of organic material at biopore sheath. Plant roots earthworms impact sheath properties differently. However, literature lacks a quantitative study root distribution within pores, which were originated taproots or earthworms. According previous on pore connectivity, it can be hyp...

Previous studies relating to the effect on whisker growth of removal of various components of the whisker follicle have shown that both after removal of the dermal papilla alone and after removal of as much as the lower third of the follicle, regeneration of new dermal papillae and then the generation of whiskers may occur (Oliver, 1966 a, b). Histological studies of this regenerative phenomeno...

Expression and the role of E- and P-cadherin in the histogenesis of the surface epidermis and hair follicles were examined using the upper lip skin of the mouse. P-cadherin is expressed exclusively in the proliferating region of these tissues, that is in the germinative layer of the surface epidermis, the outer root sheath and the hair matrix. E-cadherin is coexpressed in these layers but this ...