Extended Data Fig. 6: Scatterplot representations of the abundance of Bradyrhizobium, Burkholderia, vaginal lactobacilli and vaginosis bacteria during 16S amplicon sequencing.
From: Human placenta has no microbiome but can contain potential pathogens

a, b, The abundance of Bradyrhizobium (a) or Burkholderia (b) with respect to sequencing run batch effects during 16S amplicon sequencing. Numbers in parentheses indicate the number of samples sequenced in a given run. Values of zero are not shown on the logarithmic axis. c, d, The abundance of vaginal lactobacilli (c) and vaginosis bacteria (d) with respect to the mode of delivery during 16S amplicon sequencing. *P < 0.05, ***P < 0.001, Mann–Whitney U-tests, where values below 1% are regarded as 0% (not biologically relevant).