Figure 4From: Shaping the oral microbiota through intimate kissingEstimation of bacterial transfer after an intimate kiss by tracking probiotic marker bacteria. The OTUs of Lactobacillus and Bifidobacterium marker bacteria displayed as (A) the percentage of the total bacterial population and (B) the number of bacteria per ml in the saliva or per swab of the anterior dorsal surface of the tongue.Back to article page