Figure 1From: The presence of the pilus locus is a clonal property among pneumococcal invasive isolatesFrequency of the rlrA islet among serotypes in which at least one rlrA positive isolate was found. Black bars indicate the number of isolates positive for the presence of the rlrA islet. White bars indicate the number of isolates negative for the presence of the rlrA islet.Back to article page