Individual bacterial species detected in gastric aspirate samples of preterm neonates during first four weeks.

Number of bacterial species detected in gastric aspirate samples of preterm neonates during the first four weeks of life, by feeding type. The X-axis in each graph represents individual bacterial species, and the Y-axis in each graph represents the total number of bacterial species. Partially breast milk fed infants were fed breast milk and preterm formula. *Bacteroides spp. includes Bacteroides fragilis and Bacteroides thetaiotaomicron; **Lactobacillus spp. includes Lactobacillus plantarum and Lactobacillus acidophilus. Other includes DGGE bands that did not correspond to the ATCC standards in the marker. Bacterial species were counted based on DGGE bands.