نتایج جستجو برای: glandular hairs
تعداد نتایج: 10327 فیلتر نتایج به سال:
We report a fabrication process for constructing polymer surfaces with multiwalled carbon nanotube hairs, with strong nanometer-level adhesion forces that are 200 times higher than those observed for gecko foot-hairs.
Juvenile crickets suffer high rates of mortality by natural predators that they can detect using extremely sensitive air-sensing filiform hairs located on their cerci. Although a huge amount of knowledge has accumulated on the physiology, the neurobiology and the biomechanics of this sensory system in adults, the morphological and functional aspects of air sensing have not been as well studied ...
BACKGROUND Cutaneous human papillomavirus (HPV) infections seem to be associated with the onset of actinic keratosis (AK). This study compares the presence of cutaneous HPV types in eyebrow hairs to those in tissues of normal skin and skin lesions of 75 immunocompetent AK patients. METHODS Biopsies from AK lesions, normal skin and plucked eyebrow hairs were collected from each patient. DNA fr...
Bat wings are highly adaptive airfoils that enable demanding flight maneuvers, which are performed with astonishing robustness under turbulent conditions, and stability at slow flight velocities. The bat wing is sparsely covered with microscopically small, sensory hairs that are associated with tactile receptors. In a previous study we demonstrated that bat wing hairs are involved in sensing ai...
Synovial sarcomas are soft tissue neoplasms mostly located in the lower extremities of young adults. A case of synovial sarcoma of the thigh in a 35-year-old male with the predominant epithelial component is reported. Microscopically the tumor showed variable-sized well-differentiated glands lined by the cuboidal cells with small foci of spindle cell component between glandular structures...
The Venus flytrap Dionaea muscipula captures insects and consumes their flesh. Prey contacting touch-sensitive hairs trigger traveling electrical waves. These action potentials (APs) cause rapid closure of the trap and activate secretory functions of glands, which cover its inner surface. Such prey-induced haptoelectric stimulation activates the touch hormone jasmonate (JA) signaling pathway, w...
The amphibious plants endemic to vernal pools of the California Floristic Province provide an excellent opportunity to study adaptive evolution for two reasons. First, most of these plants exhibit a major shift in habitat preference from that of their terrestrial ancestors. Second, in most cases, this shift apparently has occurred recently. Because this adaptive evolution has been dramatic and ...
Many insects are able to sense their surrounding fluid environment through induced motion of their filiform hairs. The mechanism by which the insect can sense a wide range of input signals using the canopy of filiform hairs of different length and orientation is of great interest. Most of the previous filiform hair models have focused on a single, rigid hair in an idealized air field. We have d...
Baldness Hair loss Trichodynia Dr. Alfredo Rebora, Department of Dermatology, University of Genoa, Viale Benedeno XV, I-16132 Genova (Italy) No symptoms have ever been reported to accompany the development of baldness. There are patients, however, who, while complaining of hair loss, claim that their hair has become painful. We describe such discomfort and we propose the term trichodynia for it...
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