Figure 5From: Detection of group A Streptococcus in tonsils from pediatric patients reveals high rate of asymptomatic streptococcal carriage Gram-stain showing the positive detection of GAS biofilm (b) in a chinchilla sample (A). Detection of a Gram-positive biofilm (b) in a tonsil removed due to recurrent GAS infection (B) or ATH (C and D).Back to article page