abstract: introduction & objective: the hippocampal formation is a part of limbic system that plays an important role in memory and learning. the hippocampus is divided into three subfields: ca1, ca2 and ca3. in addition to pyramidal neurons and interneurons, the astrocytes play important roles in hippocampus, probably in memory and learning. in fact, learning needs some instruments for informa...

background: oocyte maturation and subsequent in vitro production (ivp) of embryos are affected by diverse groups of chemicals in maturation medium which are needed for successful mammalian oocyte maturation during which the dramatic cytoplasmic and nuclear reprogramming events take place. this study was designed to evaluate the effects of protein source (fetal bovine serum, fbs, and bovine seru...

background : this study aimed to compare three staining methods including: calcofluor white, chromotrope and quick hot gram chromotrope used in diagnosis of intestinal microsporidial spores . methods : one hundred and seventy five stool specimens were collected from patients referred to laboratory of intestinal protozoology at the school of public health, tehran university of medical sciences d...

objective(s) the main objective of this study was to investigate the status of chromosome stability in 3 human-mouse hybridoma cell lines over a period of time in various passages. materials and methods metaphase spreads from 3 human-mouse cell lines (hf2x653, spmo-4 and f3b6) that had been cultured in 4 successive passages, from 1 to 4 weeks, were prepared and analyzed. metaphase chromosomes s...

The principal advantages of simultaneously recording from, and staining of single neurons, buried deep in tissue, is obvious and need not be stressed. Particularly in insects, where most cell somata are electrically silent, there is so far no way to correlate neuronal activity with a particular cell other than to penetrate and to label small fibers simultaneously (Hengstenberg, 1971). Great eff...