FIG. 5.

Multiple uses of the same AWI collections. (A) A DIC image through the opening in a copper grid that was later observed using TEM. (B) DAPI-stained AWI collection. (C) DAPI-stained organisms filtered from 10 ml of subsurface water directly beneath AWI sample in previous panel. (D) DGGE of rDNA populations collected from AWI and subsurface bulk water organisms from the same samples used in two previous panels. These preliminary results indicate two distinct communities, the AWI probably exhibiting less diversity but higher density of several cell populations.