Fig. 1From: Nitrite oxidizing bacteria (NOB) dominating in nitrifying community in full-scale biological nutrient removal wastewater treatment plantsIn situ hybridization of activated sludge. In situ hybridization of activated sludge with Cy5-labeled probe EUBmix, Flous-labeled probe AOBmix and Cy3-labeled probe NOBmix (a is the activated sludge from W7 and b is from W6). Blue EUBmix-stained Eubacteria; cyan AOBmix-stained AOB; carmine NOBmix-stained NOB; Bar 10 μmBack to article page