(a) Phylogenetic tree of bacterial phylotypes detected in patients with postoperative maxillary cysts. The marker bar represents a 10% difference in the nucleotide sequence. (b) Each column of boxes represents the bacterial profile/patients. grey-, stripe-, square-, slant square-, and vertically stripe-shaded boxes indicate the presence of species detected at <10%, 10–29%, 30–49%, 50–69%, and >90% of the total number of clones analyzed, respectively. Clear boxes indicate that species were not detected (below the limit of detection). *NA indicates the name of a strain (clone), while other codes such as AF, AY, and X are the accession numbers of the type strains of species. The order of strain/accession numbers (b) corresponds to the order of the phylogenetic tree (a). **None.