The victims of the first wave pandemic caused by coronavirus COVID-19 were tens millions people in population inhabiting Earth. A previously unknown strain COVID 19, which has a specific affinity for lung tissue and high contagiousness, demonstrated global danger to life entire planet. pathogenicity virus is due three-segment structure, RNA-containing segment, factor responsible lesions, most l...

urtica dioica l. is an iranian native pharmacological plant for which little attention has been paid to the anatomical structure. medical applications of this plant include diabetes therapy, digestive improvement, anemia and kidney disease therapy. because climatic conditions can affect the anatomical structure which in turn affects pharmacological compositions, research on the anatomy of this ...

tan spot disease of wheat with the causal agent of pyrenophora tritici-repentis is a very serious  disease throughout the world causing severe yield losses. out of 163 isolates of the pathogen, collected from golestan and mazandaran provinces, 58 were selected for a study of population genetic structure. selecting the real representatives from the whole population was carried out according to t...