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Differential growth of blood and ear isolates in raffinose. S. pneumoniae serotype 14 ST15 blood isolates 4559 and 4534 and ear isolates 947 and 51742 were grown in 200 µl CDM supplemented with 0.5% glucose (CDM+Glc) or 0.5% raffinose (CDM+Raf). Similar growth studies were also performed for serotype 3 ST180 strains 180/15 (blood isolate) and 180/2 (ear isolate). OD600 was measured every hour for 12 h. Data are mean OD600 ± standard deviation (SD) from triplicate assays.
