Table 2. Relative proportions of faecal bifidobacteria in ten faecal samples as determined by FISH and 454-sequencing using ‘bifidobacteria-optimised’ universal primers (926Rb) or regular universal primers (926R).

Sample	926Rb	926R	FISH
P1	0.2%	0.0%	0.3%
P2	81.1%	1.0%	61.2%
P3	69.0%	1.7%	70.9%
P4	63.5%	0.4%	75.8%
P5	0.2%	0.0%	0.6%
P6	62.7%	4.4%	67.3%
P7	74.1%	10.8%	47.5%
P8	90.6%	5.3%	75.0%
P9	16.9%	0.0%	10.4%
P10	8.0%	0.1%	67.0%