Figure 4: Short term changes in the bacterial community profiling at the phylum (a), family (b), and genus (c) level phylotypes of fecal samples obtained at different time points (0, 24, 30, and 48 h) from a single human subject. For example, a significant increase of Proteobacteria is demonstrated at 48 h compared with () whereas Actinobacteria are not detectable any more () (a). These changes are confirmed at lower levels of detection, respectively, Pasteurellaceae (b) and Haemophilus (c) and bifidobateriaceae (b) and bifidobacteria (c) (). test, samples/time points.