Fig. 4

Heatmap of the within-phylum relative abundance of microbial taxa identified in PDHM, PM and IM samples at three time points. The figure shows the relative abundance of microbial taxa belonging to the phylum of Proteobacteria, Firmicutes and Actinobacteria. Sample ‘P’ refers to pasteurized donor human milk before the inoculation which was analyzed at the baseline (T0), 2 h (T1) and 4 h after inoculation (T2). Numbers 1 to 10 in the figure refer to PM1 to PM10 at T0 and IM1 to IM10 at T1and T2. Only taxa with relative abundance larger than 0.25% were considered