Fig. 3. Growth inhibition of PCV13 serotypes except PCV7 serotypes.S. pneumoniae serotypes (A) 1, (B) 3, (C) 5, (D) 6A, (E) 7F, and (F) 19A were cultured in media with 25, 50 or 100 mM or without SCFAs. The OD600 value was measured at 0, 1, 3, 6, 9, 12, or 24 h. The data displayed represent three different experiments and represent the mean value and standard deviation of triplicate samples. NaA, sodium acetate; NaP, sodium propionate; NaB, sodium butyrate; NT, non-treatment.