Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1984-1-7
pubmed:abstractText
We have compared in vitro mitogenic responses of frog (Xenopus laevis and Rana pipiens) lymphocytes to various preparations of lipopolysaccharide (LPS). Commercial LPS prepared from E. coli (phenol extraction) and from S. abortus-equi (phenol and TCA extraction procedures) was mitogenic for frog lymphocytes. After reextraction of these LPS preparations with phenol-water, the remaining LPS was either considerably less mitogenic or not mitogenic. Purified E. coli 055:B5 LPS, prepared by phenol water extraction, enzyme treatment and column chromatography, was not mitogenic. Frog cells proliferated poorly or not at all with all concentrations of reextracted or purified LPS tested (0.5-400 micrograms/ml) and at all culture periods examined (days 1-7). All LPS preparations used were mitogenic for CAF1 mouse lymphocytes, whereas reextracted and purified LPS preparations were not mitogenic for lymphocytes from C3H/HeJ cells. Xenopus were also not susceptible to toxicity induced by parenterally administered LPS in concentrations which killed CAF1 mice.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0145-305X
pubmed:author
pubmed:issnType
Print
pubmed:volume
7
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
483-96
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1983
pubmed:articleTitle
Mitogenic responses of frog lymphocytes to crude and purified preparations of bacterial lipopolysaccharide (LPS).
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S.