FIG. 6.
Image of probing of archaeal cells in B-drift sediments. For both the upper and lower sets of images, the cells on the left are stained with DAPI and viewed under UV fluorescence and the cells on the right are hybridized with the CY 3 archaeal probe. The upper two images show cells in suspension, while the lower two show cells adhering to pyrite sediment surfaces (separated from solution and rinsed with ethanol prior to probing). Arrows point to clusters of cells, stained (left) or hybridized (right), that are out of the plane of focus due to the irregular shape of natural pyrite sediments.