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. 2013 Jan 15;2(1):58–65. doi: 10.7774/cevr.2013.2.1.58

Fig. 2.

Fig. 2

Cross-reactivity of the pep27 mutant antisera with heterologous strains. Strains grown in THY broth were lysed, and cell lysates (10 µg/mL) of each pneumococcal strain were adsorbed onto titer plates. Antisera raised against the live pep27 mutant (THpep27) in CD1 mice after three i.n. immunizations was used as antisera for titer determination. The antigens used in this study included: D39 (type 2), EF3030 (type 19F), TIGR4 (type 4), BG7322 (type 6B), WU2 (type 3), R6 (non-encapsulated type 2). Student's t-test is indicated as follows: **p<0.01, ***p < 0.001.