Figure 2 | Scientific Reports

Figure 2

From: Exploring structure, microbiota, and metagenome functions of epigean and hypogean black deposits by microscopic, molecular and bioinformatic approaches

Figure 2

SEM–EDS investigations of cave samples. Upper panels show the micrographs obtained by SEM observations. In the panels the putative microbial imprints are marked by yellow arrows, the microbial biofilms by blue arrows, and microbial mineralized structures by red arrows. Work distance (WD) = 6.2–7.8 mm; electron high tension (EHT) = 5–7 kV; Signal = SE 2 (secondary electrons); Magnitude = 10 K X (Scale bars are presented under each panel). Lower panels present the elemental maps obtained by EDS analyses. The microanalysis acquisitions were carried out at 12.00 kV (Scale bars are presented under each panel). Mn presence is underlined with light blue colour.

Back to article page