Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1991-3-14
pubmed:abstractText
Tissue cyst formation by a goat isolate (GT-1) of Toxoplasma gondii was examined in bovine monocyte, human fetal lung, and Madin-Darby bovine kidney cell cultures. Transmission electron microscopy (TEM) and cat feeding studies indicated that tissue cysts were present in all 3 cell lines examined. Tissue cysts were first seen 3 days postinoculation (PI) using TEM. Standard cell culture procedures were used and no additional condition was needed to induce tissue cyst formation. Cats fed cell cultures excreted T. gondii oocysts in their feces 5-7 days PI. These oocysts caused lethal infections in mice. Tissue cysts were produced in cell cultures regardless if the initiating inoculum consisted of bradyzoites, sporozoites, or a mixture of bradyzoites and tachyzoites. Tissue cyst formation has been followed through 40 subpassages of infected cells. By TEM tissue cysts still were present after 40 passages, but when 40th-passaged cultures were fed to cats, oocytsts were not excreted. This indicates that the parasite had become oocystless after repeated passage in vitro.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0022-3395
pubmed:author
pubmed:issnType
Print
pubmed:volume
77
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
126-32
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Examination of tissue cyst formation by Toxoplasma gondii in cell cultures using bradyzoites, tachyzoites, and sporozoites.
pubmed:affiliation
Department of Pathobiology, College of Veterinary Medicine, Auburn University, Alabama 36849-5519.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't