Table 2

Organism	Source^a	Type		Serotype(s)^b	PCR amplification^c
Organism	Source^a	Morphology^d	Environment (s)	Serotype(s)^b	EUB primers	NIT primers
Thiobacillusdenitrificans ATCC 25259	i	R	Soil	ND	+	-
Chromobacteriumviolaceum ATCC 12472	i	R	Freshwater	ND	+	-
Rhodospirillumrubrum ATCC 33512	i	R	Pond	ND	+	-
R.purpureus	j	RR	Waste pond	ND	+	-
Rhodocyclus tenuis ATCC 25093	i	R	Pond	ND	+	-
R.galatinosus	j	C	Pond	ND	+	-

^aa, E.L. Schmidt; b, S.W.Watson; c, A.F. Carlucci; d, B.B. Ward; e, S.G. Horigan; f, J.Zyskind; g, D. Castignetti; h, M.Pontius-Brewer; i, American Type Culture Collection; j, M.T.Madigan
^bAccording to reference 34, Nm, marine Nitrosomonas sp.; No, N.oceanus; Nb, Nitrobacter sp.; Ng, N.gracilis; NR, no reaction; ND, not determined.
^c+, amplified product of correct size ; -, no amplification.
^dC, coccoid; R, rod; V, vibrio; RR, ring shaped or rod; S, spiral; L, lobular

Table 2: PCR amplification of known strains and environmental isolates with a set of EUB primers and a set of NIT primers.