Fig. 1From: Sphingolipid metabolism potential in fecal microbiome and bronchiolitis in infants: a case–control studyRarefaction curves for bacterial operational taxonomic units of the fecal microbiome. The horizontal axis indicates sequence depth while the vertical axis indicates the number of bacterial operational taxonomic units (OTUs). All 155 fecal specimens had sufficient depth to obtain high degree of sequence coverage (rarefaction cutoff, 1470 reads/specimen)Back to article page