BACKGROUND Egg-associated transmission to humans seems to be characteristic of the Salmonella serotype Enteritidis, explaining why this particular serotype has caused a worldwide pandemic since the mid '80s. Salmonella Enteritidis is much more capable to persistently colonize the laying hen reproductive tract and to survive in the hostile egg white, as compared to other serotypes. PRESENTATIO...

BACKGROUND Although chicken oviduct is a useful model and target tissue for reproductive biology and transgenesis, little is known because of the highly specific hormonal regulation and the lack of fundamental researches, including lectin-binding activities and glycobiology. Because lectin is attached to secreted glycoproteins, we hypothesized that lectin could be bound to secretory egg-white p...

Malformations which occur during the development of the avian body organs can lead to structural and functional abnormalities. Most defects are recognized at hatching, but some go undetected until somewhat later. The cause of the majority of animal congenital malformations is unknown. A significant proportion of congenital malformations of unknown cause are likely to have an important genetic c...

tion of its preventive medical activities in the A.E.F.: Dr. Haven Emerson, ex-Commissioner of Health of the City of New York as Epidemiologist, and Hans Zinsser, Professor of Bacteriology at Columbia University, who was assigned to the main laboratory in France. The establishment of the Pneumonia Commission, which attempted to deal with the havoc wrought in the Army Camps in this country by di...

The purpose of the study is to features macro- and microscopic structure avian uterus in hen Haysex white cross. objects were 10 carcasses adult hens, cross-hysex white, aged 160-180 days. To oviduct, method conventional fine dissection was used. For histological examination, material fixed a 10% aqueous solution neutral formalin, followed by pouring into paraffin. As result our research, we no...

In 2 studies, a method of linear morphometry was applied to regulatory developmental neurotoxicity studies in the rat. The first study involved the development of the brain during postnatal days (PNDs) 7-63, and the second involved the effects of 8 mg/kg i.p. trimethyltin chloride (TMT) to rats at PND 8, with morphometry performed at PNDs 12 and 24. The results of the TMT linear morphometry wer...

We investigated the reproducibility of a semiautomated method (computerized with manual intervention) for nerve morphometry (counting and measuring myelinated fibers) between three observers with different levels of expertise and experience with the method. Comparisons between automatic (fully computerized) and semiautomated morphometric methods performed by the same computer software using the...

We have examined the question, is the carbohydrate moiety of ovalbumin attached to nascent chains or to the completed protein after its release from polyribosomes. Ovalbumin nascent chains have been isolated from hen oviduct by immunoprecipitation of ovalbumin-synthesizing polysomes and subsequent isolation of peptidyl-tRNA by DEAE-cellulose chromatography. Our results indicate that both glucos...