FIG. 6.

High-vacuum SEM images of bacteria attached on surface of river sediment particles detected by ISH with the CF319 probe. The same microscopic fields are shown with SE image (a, c, and e), BSE image (b, d, and f). The topographic information was obtained with SE images (a, c, and e), and cells hybridized with the CF319 probe were detected with the BSE image (b, d, and f). Microcolony in micrographs a and b was magnified in micrographs c and d. Certain bacterial cells were buried in the particles as indicated by arrows (e and f). Magnifications: a and b, ×1,000; c and d, ×5,000; e and f, ×10,000.