Fig. 1
From: Metagenomic analysis of microbe-mediated vitamin metabolism in the human gut microbiome
Violin plot showing total normalized abundance of genes in healthy fecal samples from four different countries (i.e. USA, China, Denmark, Spain). Microbial genes annotated to KOs were grouped into the respective type of B and K2 vitamins. The pointrange refers to the mean and standard deviation. The shape represents the kernel probability density of the data across different vitamin types are abbreviated as: biotin (BIO), cobalamin (COB), folate (FOL), menaquinone (MEN), niacin (NIA), pantothenate (PAN), pyridoxine (PYR), riboflavin (RIB), thiamine (THI). Suffixes that end with -B and -T are related to biosynthetic and transporter related genes respectively. [For detailed statistical results, the reader is referred to the Additional file 1: Table S11, where the asterisks indicate ns: p > 0.05, *: p < = 0.05, **: p < = 0.01, ***: p < = 0.001, ****: p < = 0.0001 (Mann-Whitney Wilcoxon test)]