Figure 4.
Microbial distribution in a saponite-bearing locus near basaltic groundmass revealed by staining of a thin section with SYBR-Green I. (A) Back-scattered electron image of saponite aggregates enlarged from Figure 2B. An orange rectangle indicates the area shown in (B). Fluorescence microscopy images of SYBR Green I-stained microbial cells associated with saponite in a 100-μm thin section of a rock piece (B) and in a 3-μm thin section of a clay fraction (C).