نتایج جستجو برای: virus resistance
تعداد نتایج: 755876 فیلتر نتایج به سال:
The combinations of antiretroviral (ARV) drugs have proven effective in controlling the progression of AIDS, but these benefits can be compromised by drug resistance. Thus, drug-resistance testing has become an important tool in the management of HIV-infected individuals.1 Drug resistance develops when mutations in the HIV virus proteins occur due to amino acid substitutions.2 Drug resistance t...
radiological features of human infection with avian influenza a h7n9 virus: a report of three cases.
human infection with avian influenza a h7n9 virus has emerged in china with high morbidity rates. patients usually present with severe and rapidly progressive pneumonia. therefore, radiological findings are important to diagnose and evaluate disease severity. the clinical characteristics of three new cases of h7n9 virus infection were analyzed, especially the radiological findings, and previous...
Virus diseases are significant threats to modern agriculture and their control remains a challenge to the management of cultivation. The main virus resistance strategies are based on either natural resistance or engineered virus-resistant plants. Recent progress in understanding the molecular mechanisms underlying the roles of resistance genes has promoted the development of new anti-virus stra...
Virus infection may damage the plant, and plant defenses are effective against viruses; thus, it is currently assumed that plants and viruses coevolve. However, and despite huge advances in understanding the mechanisms of pathogenicity and virulence in viruses and the mechanisms of virus resistance in plants, evidence in support of this hypothesis is surprisingly scant, and refers almost only t...
Human immunodeficiency virus type 1 (HIV-1) drug resistance results from the accumulation of mutations in the viral genes targeted by the drugs. These genetic changes, however, are commonly detected and monitored by techniques that only take into account the dominant population of plasma virus. Because HIV-1-infected patients harbor a complex and diverse mixture of virus populations, the mechan...
Cucumber is one of the most important vegetable and summer crops economically and is the fourth most cultivated plant in the world after tomatoes and potatoes. In this study, the effect of plant inducers including salicylic acid and jasmonic acid on the viral disease of greenhouse cucumber with Cucumber mosaic virus (CMV) and also the expression of defense genes was investigated. Treatments inc...
Swiss mice injected subcutaneously with suspensions of spleen cells or an extract of spleens from mice infected with Friend virus develop resistance to subsequent intravenous inoculation of Friend virus. A single injection of either Friend virus or Friend cells induces resistance. Immunized mice display resistance when challenged 6 months after immunization and survive for at least 20 weeks aft...
Leaves of tobacco plant cv. Xanthi-nc inoculated or systemically infected with potato virus Y, cucumber mosaic virus, potato virus X, potato aucuba mosaic virus or alfalfa mosaic virus showed varying degrees of resistance to infection with tobacco mosaic virus. The resistance was correlated with the appearance of at least three proteins not present in healthy plants. These were the proteins tha...
s of Presentations ...........................................................................................15 Coat-Protein-Mediated Virus Resistance in Plants by Rebecca Grumet....................................................................................16 Movement Protein-Mediated Resistance by Roger N. Beachy...............................................................................
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