Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1993-9-27
pubmed:abstractText
Eight strains of Streptococcus pneumoniae were tested in vitro for their ability to produce capsular antigen in the presence of penicillin. It was found that, provided 10(6) to 10(7) pneumococci/ml were present, capsular antigen could be detected during the 72 h in which the experiment was conducted, irrespective of whether penicillin was added at 0 h or 8 h, and even when no viable pneumococci remained. When fewer pneumococci were present, capsular antigen could not be detected at any time in the presence of penicillin. Control cultures, without penicillin, yielded detectable capsular antigen only when the threshold value of 10(6)-10(7) pneumococci/ml was reached. It is concluded that the presence of penicillin does not influence the detection of pneumococcal capsular antigen, but demonstration of this antigen is totally dependent on the number of pneumococci present.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0036-5548
pubmed:author
pubmed:issnType
Print
pubmed:volume
25
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
317-22
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Detection of pneumococcal capsular antigen in the presence of penicillin in vitro.
pubmed:affiliation
Department of Immunology Research, Regional Public Health Laboratory, Groningen, The Netherlands.
pubmed:publicationType
Journal Article, Comparative Study