YogurtBacteriaDairy ProductsLactobacillus delbrueckiiLactose IntoleranceStreptococcus thermophilusGram-Negative BacteriaMilkProbioticsGram-Positive BacteriaBacteria, AnaerobicBifidobacteriumLactobacillusLactoseLactobacillus acidophilusRNA, Ribosomal, 16SBacteria, AerobicDNA, BacterialMolecular Sequence DataBacterial Proteins