PCoA plots of bacterial profiles (at the OTU level) based on the Jaccard’s coefficient for binary data (presence/absence) (A) and on Bray–Curtis similarity analysis (relative abundance) (B) from the whole milk samples (n = 7) collected from women 21 to 27 and their fractions: the fat layer and the skimmed milk. The value given on each axis label represents the percentage of the total variance explained by that axis. In the upper figures, color and shape of the symbol indicate the milk fraction (red squares, whole milk; blue triangles, fat layer; orange circles, skimmed milk). In the bottom figures, different colors of the symbols represent the samples provided by each woman, independently of the milk fraction.