FIG. 4.

In situ hybridization of a projection from the fluffy thermophilic granules viewed by confocal laser scanning microscopy (digitally produced images with pseudocolors). The projection was simultaneously hybridized with Cy5-labeled archaeal probe ARC915 (indicated as red) and rhodamine-labeled probe GNSB633 for thermophilic UASB cluster of GNSB subdivision I (indicated as green). (A) Magnified view of the bottom part of the projection (bar, 50 μm). (B) Magnified view of the tip portion of the projection (bar, 50 μm).