Source:http://linkedlifedata.com/resource/pubmed/id/15471011
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
Pt 3
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pubmed:dateCreated |
2004-10-8
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pubmed:abstractText |
The number of Teladorsagia circumcincta 4th-stage larvae in naturally infected lambs from a single farm varied among lambs and among different years. Within each year the distribution of 4th-stage larvae among lambs was similar to that expected from a negative binomial distribution. The ratio of 4th-stage larvae to adult T. circumcincta was low in two years with a low mean intensity of infection but high in two years with a higher mean intensity of infection. The negative binomial distribution is defined by the mean and by k, a parameter that measures dispersion; k was low when mean infection intensity was low but higher when mean infection intensity was high. As k is an inverse index of overdispersion this indicated that the distribution of 4th-stage larvae was more overdispersed at low levels of infection. In a combined analysis, the number of adult T. circumcincta and the plasma IgA activity against 4th-stage larvae were both associated with increased numbers of 4th-stage larvae. There was a statistical interaction between the number of adults and IgA activity that moderated their combined effect.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Sep
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pubmed:issn |
0031-1820
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
129
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
363-9
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:15471011-Abomasum,
pubmed-meshheading:15471011-Animals,
pubmed-meshheading:15471011-Binomial Distribution,
pubmed-meshheading:15471011-Female,
pubmed-meshheading:15471011-Immunoglobulin A,
pubmed-meshheading:15471011-Intestine, Small,
pubmed-meshheading:15471011-Larva,
pubmed-meshheading:15471011-Linear Models,
pubmed-meshheading:15471011-Male,
pubmed-meshheading:15471011-Regression Analysis,
pubmed-meshheading:15471011-Sheep,
pubmed-meshheading:15471011-Sheep Diseases,
pubmed-meshheading:15471011-Trichostrongyloidea,
pubmed-meshheading:15471011-Trichostrongyloidiasis
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pubmed:year |
2004
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pubmed:articleTitle |
The relationship between IgA activity against 4th-stage larvae and density-dependent effects on the number of 4th-stage larvae of Teladorsagia circumcincta in naturally infected sheep.
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pubmed:affiliation |
Department of Veterinary Clinical Studies, Institute of Comparative Medicine, University of Glasgow Veterinary School, Glasgow G61 1QH, Scotland, UK. gvma05@udcf.gla.ac.uk
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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