Fig. 1.

Viable bacteria on adenoids from four patients undergoing adenoidectomy for treatment of COM. (A) Live (green) and dead (red) bacteria adherent to the adenoid mucosal surface. (B) Aggregated live bacteria covering ∼100 μm on the adenoid surface treated with azithromycin. (C) Viable single-celled and bacterial clusters (green) adherent to the mucosal surface stained with phalloidin (blue). (D) Viable bacteria within a crypt showing diplococci (arrowheads). Scale bar, 10 μm.