To investigate the pathogenesis of acute Mycoplasma pneumoniae infection, BALB/c mice were anesthetized with metofane, and M. pneumoniae was introduced intranasally on days 0, 1, and 2. Mice were sacrificed on days 0-15. A histopathologic scoring system defined inflammatory changes in the lungs on a scale of 0-26 (least to most severe). Broth cultures were positive for all nasal passage and bro...

Diazinon (DZN) is a widely used pesticide that can affect the vital organs of non-target aquatic animals—mainly fish. This study evaluated acute toxicity (LC50) six DZN concentrations (0.5, 0.75, 1.5, 2, 2.5, and 3 mg·L−1) and, based on its evaluation after 24 h, 48 72 96 two sublethal for chronic testing (0.01 0.05 21 days exposure to grass carp fingerlings (Ctenopharyngodon idella Valencienne...

the toxic impact of copper sulfate in lethal and sublethal concentrations was investigated on gill of grass carp, ctenopharynogodon idella . in this investigation, 27 specimens were used as control group and three treatment groups were treated with 2.5 and 5mg/l of copper sulfate. gill samples were collected from each treatment after 96hr and lesions were analyzed by light microscopy. in histop...

the study monitored the toxicity of environmentally relevant concentration of pesticides and metals in zebra fish danio rerio. zebra fish were exposed to environmentally relevant concentration of pesticides and metals for a period of 14 days. the individual and the combined toxicity of pesticides and metals were evaluated. the pesticides and metals treated groups showed histopathological altera...

background and aims: influenza virus is a major pathogen involved in respiratory illnesses during winter seasons. a variety of diagnostic methods have been developed to identify influenza viruses in clinical specimen. methods: nasal and pharyngeal samples taken from patients were inoculated into madin-darby canine kidney (mock) cells and embryonated chicken eggs (eces). the culture media was as...

a survey on parasitic copepods was carried out on pampus argenteus euphrasen, 1788 in hormozgan province. totally, 62 specimens were caught by bottom trawl from northwest of qeshm island in summer 2010 and winter 2011. these were immediately frozen in on-board deep freezer of fishing vessel. all samples were transferred to laboratory and after measuring fish weight and length, parasitological s...

Concentrations of polybrominated diphenyl ethers (PBDEs) and methoxylated (MeO-PBDEs); are reported in specimens fish notothenioids Chaenocephalus aceratus (SSI), Trematomus bernacchii (ERN), Nototheniops nudifrons (NOD) from the South Shetland Islands, Antarctica. Significant differences accumulation 2?-MeO-BDE-68 6-MeO-BDE-47 were detected among analysed species. MeO-BDEs significantly higher...

This study evaluated the response of the subcutaneous connective tissue of BALB/c mice to root filling materials indicated for primary teeth: zinc oxide/eugenol cement (ZOE), Calen paste thickened with zinc oxide (Calen/ZO) and Sealapex sealer. The mice (n=102) received polyethylene tube implants with the materials, thereby forming 11 groups, as follows: I, II, III: Calen/ZO for 7, 21 and 63 da...