Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1983-4-21
pubmed:abstractText
Certain temperature-sensitive mutants of the RH strain of Toxoplasma gondii and a "back mutant," all maintained in human fibroblasts, were studied in mice. Most mutants gave rise to acute, fatal infections, and after sulfonamide prophylaxis rarely persisted as chronic infections in mice. However, the ts-4 strain was nonfatal in doses up to 10(3) to 10(5) tachyzoites, elicited high titers of antibody, and did not persist beyond 2 mo. No Toxoplasma cysts were found. There was no evidence that a febrile reaction of the mice was restrictive, because the highest temperatures, 37.9 to 38.4 C, occurred 3 days after infection, whereas the organisms were recoverable for 16 to 32 days. Because doses of Toxoplasma, survived by 11 of 12 normal BALB/c mice, and by one of five thymic transplanted athymic mice, killed six of six athymic mice, it appears that the limited persistence of ts-4 is related to the immunologic response.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0022-3395
pubmed:author
pubmed:issnType
Print
pubmed:volume
69
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
171-5
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1983
pubmed:articleTitle
Temperature-sensitive mutants of Toxoplasma gondii: pathogenicity and persistence in mice.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't