background: cryptosporidiosis is a zoonotic disease with public health importance, especially for individuals with weak immune system, such as children, elderly people and immune suppressed ones. evaluation of the prevalence of cryptosporidium in wild rodents such as wild brown rats could help to establish an epidemiological map of cryptosporidiosis. the aim of the current study was to assess t...

background and aims: rubella is predominantly a childhood disease that is endemic throughout the world and when rubella outbreaks occur, they are accompanied by birth defects following congenital rubella syndrome. immunity to rubella virus as a teratogenic agent has an important role for prevention of these serious congenital defects. lymphocyte proliferation assay is a way for investigation of...

background:neonatal calf diarrhea (ncd), also known ascalf scours, is caused by viruses, bacteria, and parasites.coronavirus is one of the important causes of ncd syndrome.electron microcopy has been used for demonstration of virusesin fecal samples of diarrheic calves since 1969. objectives:the aim of this study was to determine the prevalence ofcoronavirus in fecal samples of neonatal calf di...

objective: carthamus tinctorius l.(c. tinctorius) is used as a food additive but also has medicinal applications. the present work was designed to investigate its probable side effects on the histology and function of the kidney in the mice. materials and methods: sixty adult balb/c mice were randomly distributed into one control and three experimental groups. the control group received only di...

introduction: to investigate the ultrastructural changes of dentin irradiated with 980-nm diode laser under different parameters and to observe the morphological alterations of odontoblasts and pulp tissue to determine the safety parameters of 980-nm diode laser in the treatment of dentin hypersensitivity (dh). methods: twenty extracted human third molars were selected to prepare dentin discs. ...

introduction: endodontic k-files are major tools for cleaning and shaping of the root canal systems. as there are various k-files available in iranian market, the physical properties of the five available brands were investigated to assist the clinician when selecting suitable endodontic k-files according to the intended application. materials and methods: physical properties (including debris ...

introduction the aim of this study was to compare the smear layer removal efficacies of 3% sodium hypochlorite (naocl), 17% ethylenediaminetetraacetic acid (edta), smearclear and biopure mtad using a common irrigation protocol. materials and methods: fifty freshly extracted human single rooted maxillary and mandibular teeth were prepared by a protaper rotary system up to an apical preparation f...

introduction babesiosis is caused by apicomplexa parasites of the genus babesia. humans are commonly infected by babesia through tick bites. there is limited information available about babesia infection of humans in china. the aim of this study was to isolate the pathogen from a patient with severe parasitemia. case presentation blood samples were observed by transmission electron microscopy (...

dendrostellera lessertii (thymelaeaceae) is a toxic plant that grows in parts of iran. the anti-proliferative properties of its crude methanol extract and one of its active components, 3-hydrogenkwadaphnin (3-hk), have been established using several cancer cell lines. methods: in a further attempt to determine the mode of action, two groups of synchronously growing cells were treated with a sin...