Fig. 3From: MALDI-TOF mass spectrometry for sub-typing of Streptococcus pneumoniaeA cluster dendrogram of serotype-organised MALDI-TOF mass spectrum data for the three dominant pneumococcal serotype-genotype pairs. The isolate selection comprises 69 pneumococcal isolates. The inner metadata ring denotes global pneumococcal sequence type (GPSC) and the outer ring serotypeBack to article page