Aim:This study was planned for determination the toxic effect of thiamethoxam (TMX) in immunized mice with Brucella abortus culture filtrate antigen (CFBAgs) (as a vaccine) and its role of TMX on decrease activity of B. abortus antigen on eliciting of humoral and cellular immunity.Materials and Methods:To achieve these goals 60 female mice were used, 7-8 weeks age, they were divided equally into three groups (20 in each group) and treated as follows: 1st group: Mice were immunized with CFBAgs intraperitoneally in two doses, 2 weeks intervals with (protein concentration 2 mg\ml), 2nd group: Mice immunized as in the 1st group and was administrated orally with 1/10 lethal dose 50% of TMX (83.7 mg/kg B.W.) for 4 weeks daily, 3rd group was administrated orally with 0.3 ml normal saline served as a control group. At day 28 post immunization (PI) delayed type hypersensitivity (skin test) was done, and serum samples were collected at day 30 (PI) for detection of passive hemagglutination test (PHA); interferon gamma (IFN-γ) which was done by enzyme-linked immunosorbent assay test in addition to phagocytes assay.Results:The results of skin test post injection with soluble antigen of B. abortus intradermally showed a high significantly mean values at p≤0.05 of footpad skin thickness in the 1st group of mice which recorded (0.51±0.002 mm) as compared with the 2nd group of mice which showed (0.08±0.002 mm) after 24 h; the mean values of skin thickness were declined in the 1st mice (0.46±0.002) and 2nd mice (0.070±0.001) at 48 h; control group showed a negative results. These results were agreed with results of serum levels of IFN-γ (pg/ml) that showed that a significant increase the vaccinated 1st group (406.36±1.52), than those values in the 2nd group (151.61±0.89) and negative result in 3rd group (46.47±0.60), in addition to results of PHA test which showed a significant increase in antibody titer in the 1st group (139±12.16) with low level of serum antibody in the 2nd group (7.66±0.33). Phagocytic ratio results in the 1st group showed an increase to reach (18.55±0.44) than a ratio in the 2nd group (13.24±0.32) and the control group (5.46±0.25).Conclusion:It was concluded that TMX induced suppression of humoral and cellular immune responses in immunized mice with CFBAgs.

The current study was performed an investigation in seropositive stray cats with Toxoplasma gondii and to correlate the results of pathological lesions with seropositive results of the cats. To achieve these goals, fifty blood samples and specimens from internal organs (liver, spleen, brain, kidney, intestine and lung) of stray cats were collected from different area of Baghdad Province during the period 1.10.2011-1.10.2012. Seropositive ELISA-IgG was demonstrated that 66 % of stray cats while female expressed (75 %) of seropositive ELISA-IgG were higher than male (30% ) and animals with average age 2months showed high percentage of seropositive ELISA-IgG (100%) as compared with age (adult cat) that expressed( 63.82 %) of seropositive. There was a significant difference (P≤0.01) among positive cases to anti-Toxoplasma ELISA-IgG. Severe pathological lesions were noticed in the lungs ,livers and intestines of animals that expressed high (optical density) (OD) of anti-Toxoplasma IgG ,in addition ,tachyzoits intracytoplasm of alveolar macrophages and hepatocytes as well as free zoites in alveolar space of the lung, were reported. Local necrosis with tachyzoites was seen in the brain of the cats, in addition to mineralization. On bases of the presence of pathological lesions in cats that expressed seropositive anti-Toxoplasma antibodies, it can be conclude that T.gondii is responsible for the appearance of inflammatory reaction in the internal organs of cats and there is a correlation between seropositive and pathological lesions of T.gondii infection and this parasite is highly distributed in Baghdad stray cats and it may be an important cause of abortion in the women.

Newcastle disease virus selectively kills human cancer cells versus normal cells.Newcastle disease virus has pleiotropic immune stimulatory properties. This study was conducted to investigate the ability of Iraqi strain of NDV to induce immune stimulation when used as oncolytic agent by intratumoral injection, IL-2 and IFN-gamm as well as CD8 and CD56 were used as parameters to determine of immune stimulation properties. The results showed high immune stimulatory effect for Iraqi strain of NDV.

Out of 1250 bovine fasciolliasis. 10 cattle were found to have lung fascioliasis, one cow had abomasal fascioliasis and another one wih renal fascioliasis.  The recovered flukes were identified as immature spec imens of Fassciola gigantica .Gross and histopathology of the lesions were studied. The occurrence of Fasciola gigantica in kideny and abomasum was recorded for the first time :  Introduction Infection with Fasciola gigantica is an important cause of disease and economic loss in domestic animals in many parts of the world. Among the effects attributed 10 flucke infection are loss of condition , reduced meat and milk production reduced fertility and rendering of livers unsuitable for human consumpiior. . Severe infection may cause death either directly or indirecily by inzitiating or aggravating bacterial infection (1). One of the reasons making F.gigantica more pathogenic ihan F.hepatica is frequent ecotopic occurence of F.gigantica in most of the domestic animal species (1,2,3). Ectopic ovine F.gigantica infection was reported in spleen, lung, heart, diphragm and portal vein, in additional the liver (4,5). In cattle F.hepatica_ could only produce lesions in the liver but F.gigantica extended its pathogenic effects to the lung tissue (3,6).  The aim of this study is to elucidate the occurence of F.gigantica in organs other than the liver with parasitological and pathological investigation.