A review. A Review. The milk samples of 20 women were analyzed, staphylococci were the dominant bacterial group and Staphylococcus epidennidiswas the dominant species. Other bacteria (mainly streptococci and a few gram-neg. species) were also identified in fewer samples. Globally, PCR-DGGE results were correlated with those obtained by culture-based methods (Delgado et al., 2008). In this study, mothers with celiac disease had a reduction in the gene copy numbers of Bifidobacterium spp. and B. fragilis group in their milk compared with milk from healthy mothers. These results, together with the reduced abundance of immunoprotective compounds in human milk from women with celiac. Disease, could theor. diminish the protective effect of breastfeeding on the child's future risk of developing celiac disease, although further prospective studies are needed (Olivares et al., 2015).