In vivo, dendritic cells (DC) form a network comprising different populations. In particular, Langerhans cells (LC) appear as a unique population of cells dependent on transforming growth factor beta(TGF-beta) for its development. In this study, we show that endogenous TGF-beta is required for the development of both LC and non-LC DC from CD34+ hematopoietic progenitor cells (HPC) through induc...

A variable optical attenuator (VOA) based on polymer stabilized twisted nematic (PSTN) liquid crystal (LC) is demonstrated. Comparing with the normal twisted nematic LC-based VOA, PSTN exhibits a much faster response time. Moreover, the polymer networks effectively eliminate the backflow effect which exists in the normal TNLC cell. The attenuation mechanism of the PSTN LC was studied. Both pola...

background and aims: a selective and sensitive high performance liquid chromatography-electrospray ionization mass spectrometry method has been established for determination of methotrexate in human plasma. methods: methotrexate was extracted from plasma with acetonitrile. the mobile phase consisted of acetonitrile-water-formic acid 74: 25: 1(v/v). twenty µl of sample was chromatographically an...

Given their specific electro-optical characteristics, liquid crystals (LCs) are usually used to study and fabricate optical devices for applications. The early study of LC lenses began in the 1970s and immediately became an interesting topic because of their unique optical capabilities. Especially, several innovative types of LC lenses had been proposed including a lens with circular hole-patte...

Submit Manuscript | http://medcraveonline.com network of collagen fibers. It has been considered that LC maintains the pressure gradient between intraocular pressure (IOP) and the periocular pressure and it structurally supports RGC axons. As LC is structurally weaker than other parts of sclera which are thicker and denser, it is highly sensitive to the effects of the IOP elevation.1,2 LC is a ...

We report the finding that a chiral cyclopeptide dissolved in a nematic liquid crystal (LC) host could aggregate in a manner that is controlled by the texture (LC director configuration) of a cholesteric phase that is induced by the cyclopeptide itself. On one hand, with the fingerprint texture, where the helical axis formed by rotating LC molecules, that lies in the substrate plane, the cyclop...

Neurons of the nucleus locus coeruleus (LC) discharge with phasic bursts of activity superimposed on highly regular tonic discharge rates. Phasic bursts are elicited by bottom-up input mechanisms involving novel/salient sensory stimuli and top-down decision making processes; whereas tonic rates largely fluctuate according to arousal levels and behavioral states. Although it is generally believe...

Submit Manuscript | http://medcraveonline.com network of collagen fibers. It has been considered that LC maintains the pressure gradient between intraocular pressure (IOP) and the periocular pressure and it structurally supports RGC axons. As LC is structurally weaker than other parts of sclera which are thicker and denser, it is highly sensitive to the effects of the IOP elevation.1,2 LC is a ...