Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1988-4-6
pubmed:abstractText
In the field of viral oncogenesis the latency period is the interval between detectable establishment of infection and appearance of a tumor. Between 1969 and 1985, a total of 60 sheep died with lymphosarcoma. They were inoculated with BLV-positive blood from various donor cows, by various routes, at various ages, etc. A statistical analysis was performed trying to find a correlation between the length of the latency period and, on the other hand, one or more factors, such as sex, family lineage, identity of the dam, age at inoculation, route of inoculation, or origin of the inoculum. None of the above mentioned parameters has a significant effect on the length of the latency period. In two series of sheep inoculated with decreasing number of lymphocytes from BLV-positive donor cows, hematological disorders and tumors appeared at first in recipient animals inoculated with the higher doses of infectious blood. Thus, the inoculated dose has an effect upon the length of the latency period; the higher the dose inoculated, the shorter the latency period. This finding suggests an explanation to the natural occurrence of multiple case herds as opposed to no-tumor case herds. A multiple case herd fulfills two conditions: the presence of a good donor and an efficient route of transmission allowing the transfer to the recipient of the optimal amount of infected blood.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0887-6924
pubmed:author
pubmed:issnType
Print
pubmed:volume
2
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
103-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Experimental transmission of enzootic bovine leukosis to sheep: latency period of the tumoral disease.
pubmed:affiliation
National Institute for Veterinary Research, Brussels, Belgium.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't