background: sperm vitrification is a technique of ice and cryoprotectant free cryopreservation by direct plunging of sperm suspension into liquid nitrogen (ln2). the aim of this study was to investigate the influence of cryoprotectant free-vitrification on human sperm fine structure by msome technology and the fertility potential by zona binding assay (zba). methods: 20 normo-ejaculates were pr...

insulinoma is an insulin-producing tumor that leads to hypoglycemia. the signs and symptoms of this disease include confusion, headache, disorientation, visual disturbances, abnormal behaviors and coma. in this article, we report a case of insulinoma presented with increased frequency of pervious tonic clonic seizures from 2 weeks before admission.

background: schizophrenia has been associated with altered immunity. different studies regarding natural killer cell activity (nka) in schizophrenic patients have shown inconsistent results. objectives: to evaluate nk cell activity in schizophrenic patients in comparison with healthy control individuals.   methods: 30 medication-free schizophrenic patients and 41 healthy sex, age and smoking st...

the main goal of this study is the effectiveness evaluation of socio-demographic variables on increasing marriage age of working female students in university of tehran. using statistical method and questionnaire technique, 387 married female students have been participated in this study by cluster-sampling method. the explanatory variables of female students increase marriage age are: educatio...