Fig 3. The relative abundance of Streptococcus mitis and bacterial richness are associated with the mode of delivery.

(a) The relative abundance of Streptococcus mitis in milk from mothers who delivered vaginally (n = 19), via emergency caesarean section (n = 5), or via elective caesarean section (n = 4). The average value for each group is indicated with a line. (b) Richness of milk samples from mothers who delivered via caesarean section (n = 10) or vaginally (n = 19). * indicate significant results.