the present study is a research which explores the relationship between introversion/extroversion and the use of vocabulary learning strategies. the participants were 80 male and female efl students of university of sistan and baluchestan who had studied efl at the university for at least two years and were randomly selected. the participants were selected after excluding those who got l scores...

common variable immunodeficiency (cvid) is a heterogeneous group of disorders, characterized by hypogammaglobulinemia and increased susceptibility to recurrent infections, autoimmunity and malignancies. we have previously shown that some pediatric patients with cvid can respond to meningococcal polysaccharide vaccine. twelve pediatric cases with cvid were re-evaluated to determine whether bacte...