نتایج جستجو برای: virulence factores
تعداد نتایج: 55929 فیلتر نتایج به سال:
La empresa desde sus orígenes ha sido un pilar fundamental en el progreso de la humanidad. Lógicamente, para que haya sobrevivido a través del tiempo debe ser productiva, vale decir, los productos y servicios ella produce tienen sobreponerse tomar ventaja sobre insumos se utilizan su producción o lo es mismo, tiene contar con una buena productividad. Hay serie factores, tanto internos como exte...
Background: The coronavirus disease 2019 (COVID-19 the seventh human coronavirus) was discovered in Wuhan, Hubei province of China, in January 2020. COVID-19 virus caused six million deads in the world to date and cussed infection of more than seven million of cases in Iran(1). This infectious disease caused by the SARS-CoV-2 virus. This virus was contagious and fast-spread. Despite the aquaran...
The aim of this study was to assess the existence of possible cross-protection between Trypanosoma congolense strains of low and extreme virulence circulating in the same trypanosomiasis focus. Groups of six mice were infected using one of three strains of low virulence and challenged with one of three strains of extreme virulence. A group of six mice was used as control for each strain of low ...
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