Résultats de la recherche - 145 results
Widespread occurrence of the micro-organism Wolbachia in ants.
Keywords: Animals ants Biological Evolution Disorders of Sex Development Female Male polymerase chain reaction reproduction Rickettsiaceae Sex Determination Processes Social Behavior Species Specificity ...
In ovo treatment with an aromatase inhibitor masculinizes postnatal hormone levels, abdominal fat pad content, and GH pulsatility in broiler chickens.
serial blood samples were withdrawn every 10 min for 5 hr, wherein GH pulsatility characteristics were determined using deconvolution analysis. The proportional abdominal fat pad weight was reduced ...
Quantitative image analysis as an alternative to chemical analysis for follow-up of liver biopsies from a toucan with hemochromatosis. A technique with potential value for the follow-up of hemochromatosis in humans.
sections versus chemical analysis for determination of the iron content of serial liver biopsies taken at regular intervals after the onset of treatment, in a case of hemochromatosis in a channel-billed ...
Individual chaperones required for Yop secretion by Yersinia.
encode a YopD-specific chaperone, which we called SycD. Determination of the dependence of YopB on SycD requires further investigation. SycE, SycH, and SycD appear to be members of a new family of ...
Identification of DNA sequences recognized by VirF, the transcriptional activator of the Yersinia yop regulon.
vitro and that specifically binds to the promoter region of VirF-regulated genes. In this work, we determined the sequences of eight VirF-binding sites from four different genes, by DN ase I or hydroxyl ...
Characterization of structural and non-structural proteins of hog cholera virus by means of monoclonal antibodies.
120 kDa, respectively, and a protein complex containing 15, 16, 27, and 55 kDa polypeptides which were further characterized. One monoclonal antibody recognized an antigenic determinant at the ...
Biotype, serotype, and pathogenicity of attaching and effacing enteropathogenic Escherichia coli strains isolated from diarrheic commercial rabbits.
biotype 8 were O103:K-: H2. These data indicate that specific clones of AEEC might be involved in juvenile rabbit enteritis. It was concluded that determination of biotypes allows the screening of highly ...
Comparison of the pathogenic, antigenic and molecular characteristics of two encephalomyocarditis virus (EMCV) isolates from Belgium and Greece.
in pigs in Greece. Sows in the mid-gestation period and one- to two-month old piglets were inoculated with each isolate. The molecular relationship between both isolates was studied by determining the ...
Association of Streptococcus gallolyticus strains of high and low virulence with the intestinal tract of pigeons.
Second, the association of S. gallyticus strains of differing virulence with the intestinal tissue was determined quantitatively. Experiments were performed as described above. The number of S. gallolyticus ...
Serological and biochemical follow-up in cattle naturally infected with Fasciola hepatica, and comparison with a climate model for predicting risks of fasciolosis.
levels of sorbitol dehydrogenase (SDH) and gamma-glutamyl transferase (gamma GT), packed cell volumes, white blood cells and differential leucocyte counts were determined monthly. No statistically ...