The objective of this study was to determine the development phases Toxocara canis eggs outside host and migration larvae in internal organs chickens infected by ingestion embryonated T. eggs. Under a microscope observation which were incubated petri dish containing 5 mL distilled water at 30 – 33◦C with regularly aerated, showed egg through various stages, including one cell, two cells, three ...

Vero cells and Madin Darby Canin Kidney cells were exposed to Salmonella typhimurium sub spp. enteritis to study the interaction and invasion. The monolayer cell line bottles were selected and sub cultured. The sub cultured bottles were incubated at 37°C in 5% CO atmosphere for the formation of monolayer. 2 After the complete confluence of cells, the bottles were selected for the inoculation of...

Infectivity and pathogenicity of Bordetella bronchiseptica to rabbits were investigated by intranasal inoculation of the organism to suckling and young animals. Results are summarized as follows. 1. By inoculation of 5 X 10(4) and 10(6) organisms, the infection developed in 60% and 100% of young rabbits, respectively. 2. In young rabbits, the growth of the organism was evident in the trachea wi...

Observations on the therapeutic effect of penicillin in both experimental and clinical leptospirosis have not been in full agreement. Heilman and Herrel (1) reported that of 32 guinea pigs which, 17 to 24 hours after the inoculation with L. icterohaemorrhagiae, received a total of 800 oxford units (hereafter abbreviated as o.u.) of penicillin daily for 7 days, 23 showed a complete suppression o...

BACKGROUND Viruses have been identified as one of a variety of potential agents that are implicated in atherogenesis. METHODS AND RESULTS C57BL/6J mice were killed before or 2, 3, 5, 7, or 9 days after intranasal infection with 10(5) plaque-forming units (pfu) of Influenza A strain WSN/33. Peak infectivity in lungs was reached by 72 hours, and it returned to baseline by 9 days. No viremia was...

Under certain conditions, C57BL/6 mice persistently infected with mouse hepatitis virus strain JHM (MHV-JHM) develop clinical disease and histological evidence of demyelination several weeks after inoculation with virus. In a previous report, we showed that mutations in the RNA encoding an immunodominant CD8 T-cell epitope within the surface glycoprotein (epitope S-510-518) were present in all ...

1. The intravenous administration of six doses of arsphenamine to syphilitic rabbits in amounts of 10 mg. per kilo, 127 days after inoculation is sufficient to render the popliteal nodes of such animals incapable of transmitting the infection to normal animals. 2. Syphilitic rabbits that have been treated in this manner and whose popliteal nodes 32 to 38 days after treatment have been shown to ...