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Bifidobacteria as percentage of total bacterial load determined by FISH and real-time PCR (qPCR) in fecal samples of BF infants and infants who received SF or OSF. Bars represent standard errors. @, significant difference (P < 0.05) between the BF and SF groups; *, significant difference (P < 0.05) between the OSF and SF groups; #, significant increase (P < 0.05) during the study period.
