نتایج جستجو برای: foreign particles
تعداد نتایج: 234300 فیلتر نتایج به سال:
The complement system is a network of more than 50 plasma proteins and receptors, which have the role of mediating innate and adaptive host defence mechanisms, whereas they also participate in various (patho)physiological processes. The primary functions mediated by complement proteins include phagocytosis of foreign elements (bacteria, viruses, particles etc.), cell lysis, inflammation, solubi...
Small hydropower (SHP) is a renewable, efficient and eco friendly technology. Out of all the essential civil components, the desilting tank is one of the most vital part of SHP schemes, which ejects the sediment and foreign particles carried by water through the conductor system and protects the hydro mechanical equipments. With the passage of time, the desilting device has undergone modificati...
Evidence for a developmental relationship between B cells and macrophages has led to the hypothesis that B cells evolved from a phagocytic predecessor. The recent identification of phagocytic IgM+ cells in fishes and amphibians supports this hypothesis, but raises the question of when, evolutionarily, was phagocytic capacity lost in B cells? To address this, leucocytes were isolated from red-ea...
The core protein of the hepatitis B virus, HBcAg, assembles into highly immunogenic virus-like particles (HBc VLPs) when expressed in a variety of heterologous systems. Specifically, the major insertion region (MIR) on the HBcAg protein allows the insertion of foreign sequences, which are then exposed on the tips of surface spike structures on the outside of the assembled particle. Here, we pre...
In 1884, Metchnikoff (1) presented his studies of phagocytosis and concluded that the process was a general reaction that removed particulate matter from the circulation. Highly mobile cells, the polymorphonuclear leukocytes, were observed to ingest microorganisms and other particulate matter, such as pus, corpuscular elements of extravasated blood, and foreign cells. In addition to these circu...
We have used nuclear magnetic resonance (NMR) to obtain spatially and temporally resolved profiles of gas flow in microfluidic devices. Remote detection of the NMR signal both overcomes the sensitivity limitation of NMR and enables time-of-flight measurement in addition to spatially resolved imaging. Thus, detailed insight is gained into the effects of flow, diffusion, and mixing in specific ge...
In receptor-mediated endocytosis, cells exercise biochemical control over the mechanics of adhesion to engulf foreign particles, featuring a variable adhesion strength. Here we present a thermodynamic model with which we elucidate that the variable adhesion strength critically governs the cellular uptake, yielding an uptake phase diagram in the space of ligand density and particle size. We iden...
Aluminum oxyhydroxide (alum) is a crystalline compound widely used as an immunological adjuvant of vaccines. Concerns linked to the use of alum particles emerged following recognition of their causative role in the so-called macrophagic myofasciitis (MMF) lesion detected in patients with myalgic encephalomyelitis/chronic fatigue/syndrome. MMF revealed an unexpectedly long-lasting biopersistence...
a large number of single research studies on the effects of strategy-based instruction (sbi) in teaching english as a foreign or second language has been conducted so far. however, the lack of a comprehensive meta-analysis targeting the effectiveness of english language sbi is observed. moreover, the findings of experimental studies regarding the context of the english language, proficiency lev...
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