Table 1 Denitrification genes in dental biofilms of five volunteers

From: Denitrification in human dental plaque

Volunteer	NO₃^- reductase	NO₂^- reductase		NO reductase		N₂O reductase
	narG	nirS	nirK	cnorB	qnorB	nosZ
A	+	+	+	-	+	+
B	+	+	+	-	+	+
C	+	+	+	-	+	+
D	+	-	+	-	+	+
E	+	NA	NA	-	+	NA

Results are based on detection of a PCR product with the expected size or on the additional analysis of the sequence of the PCR product.
NA = not analysed.

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ISSN: 1741-7007

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