Abundances and distributions of the different phyla in the four biofilm samples.

<p>Abundances and distributions of the different phyla in the four biofilm samples.</p

The packing parameters.

<p>The packing parameters.</p

Venn diagram illustrating the overlap of the four bacterial communities from the initial inoculum and the samples of the top, middle and bottom layers.

<p>The shared OTUs (69) were analysed at the phylum level.</p

Schematic representation of the experimental setup.

<p>Schematic representation of the experimental setup.</p

Rarefaction curves based on 16S rRNA gene sequencing of the samples (from top, middle and bottom layers) and the initial inoculum.

<p>The Chao1 index is also shown. The OTUs were defined by a 97% cutoff.</p

Microbial Community in a Biofilter for Removal of Low Load Nitrobenzene Waste Gas - Fig 5

<p><b>Principal component analysis (PCA) of bacterial communities from the initial inoculum and samples of the top, middle and bottom layers based on the classified OTUs (a)</b>. <b>Heat map illustrating the abundances of all the major genera (with a relative abundance of more than 1% in at least one sample).</b> The color intensity (log scale) in each panel indicates the relative abundance of the genus in each sample (b).</p

Concentrations of nitrite released.

<p>Concentrations of nitrite released.</p

Genera (relative abundance>1% at genus levels) in the initial inoculum and the samples of the top, middle and bottom layers.

<p>The dominant genera in the different layers are shown in bold.</p

MMP-2 (a) and MMP-9 (b) expression of C, Us, S, and Us+S groups.

<p>Arrow: small cells. Data are presented as mean ± SD values. Statistical significance was determined by one-way ANOVA Dunnett’s t-test. *p<0.05 and **p<0.01 <i>vs.</i> control group. Scale bar = 50 µm.</p

PCNA (a) expression and TUNEL staining (b) in tumors of C, Us, S, and Us+S groups.

<p>Numbers are mean ± SD values. Statistical significance was determined by one-way ANOVA Dunnett’s t-test. *p<0.05 and **p<0.01 <i>vs.</i> control group. Scale bar = 50 µm.</p