نتایج جستجو برای: human host
تعداد نتایج: 1810637 فیلتر نتایج به سال:
Viruses are dominant entities in the biosphere and parasitize all cellular life forms. The relative abundances of different classes of viruses are dramatically different between prokaryotes and eukaryotes. In marine, soil and animal-associated environments, virus particles consistently outnumber cells by one to two orders of magnitude. It is estimated that 10 quintillion (1030) viral particles ...
Background and Objective: Tuberculosis (TB) caused by Mycobacterium tuberculosis, is an infectious disease in human which kills nearly three millions of people annually. Approximately, one - third of the world populations are infected with this bacteria and 5 - 10 % of them develop the active form of the disease. Individuals are different in susceptibility to TB infection. These differences mig...
background: cercariae (larva of helminth parasites) are covered by a thick glycocalyx coat, which serves as an osmotic protection during their free existence, and contain carbohydrates conjugated as glycoproteins, glycolipids and mucopolysaccharides. although, limited studies have been made on life cycle of cercariae from fresh water snails, however, carbohydrate studies on cercariae have ...
sustainable tourism development is a process that interacts with host life quality, visitorâ² demands and preservation of natural and human environment. in the sustainable tourism approach, with an emphasis on the key function of hosts and guests' perception to understand and constantly evaluate their beliefs and imaginations toward tourism development in destination, subjective indicator...
background: to determine the morphological specifications of the bird schistosomes cercaria from lymnaea gedrosiana and to detect the surface carbohydrates as receptors for host lectins in the host-parasite relationship systems such as avian schistosomiasis and human cercarial dermatitis. methods: one hundred ninety two snails collected from dezful areas in khuzestan province, in the south west...
a two-year laboratory study on the biology (including self-fertilization) of bulinus truncatus, the intermediate host of schistosoma haematobium, s. bovis and paramphistomum microbotrium in iran, has revealed information on the longevity, reproduction, hatchability rate, hatching time during various months of the year, and growth and mortality rates of this snail. it was found that the reproduc...
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