FIGURE 1. Morphology and physiology of anammox bacteria and their role in the marine nitrogen cycle.
From the following article:
Anaerobic ammonium oxidation by anammox bacteria in the Black Sea
Marcel M. M. Kuypers, A. Olav Sliekers, Gaute Lavik, Markus Schmid, Bo Barker Jørgensen, J. Gijs Kuenen, Jaap S. Sinninghe Damsté, Marc Strous and Mike S. M. Jetten
Nature 422, 608-611(10 April 2003)
doi:10.1038/nature01472
a, Simplified marine nitrogen cycle including the anammox 'sink'. Org.N, organic nitrogen. b, Morphology of the anammox cell and proposed model for the anammox process. HH, hydrazine (N2H4) hydrolase; HZO, hydrazine oxidizing enzyme; NR, nitrite reducing enzyme. c, Fluorescence in situ hybridization of filter material from station 7617 (142 m water depth). Green cells are total Eubacteria stained with EUB338 probe; red cells (encircled) are anammox bacteria stained with a new specific probe (AmxBS820).