NBT positive bacteria in human saliva: A possible artefact in NBT tests

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Nitroblue tetrazolium (NBT) was used to demonstrate the strongly-reducing properties of human whole saliva. Pure parotid saliva had no such activity as measured by this method. By a process of elimination, using physical and bacteriological techniques, it was concluded that the reducing activity is due to Gram-positive aerobic micrococci. It may be necessary to consider a false positive artefact in the stimulated NBT test, if the test bacteria are capable of NBT reduction.

Original languageEnglish (US)
Pages (from-to)215-219
Number of pages5
JournalJournal of Infection
Issue number3
StatePublished - May 1982


ASJC Scopus subject areas

  • Microbiology (medical)
  • Infectious Diseases

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