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Figure 1 | BMC Immunology

Figure 1

From: Host immunity in the protective response to nasal immunization with a pneumococcal antigen associated to live and heat-killed Lactobacillus casei

Figure 1

Immunoglobulin (Ig)A (a) and IgG (b) anti-pneumococcal protective protein A (PppA) antibodies response in nasal and bronchoalveolar lavages (NL and BAL) and serum of young mice nasally immunized with PppA and PppA associated with live (LcV) and heat-killed (LcM) Lactobacillus casei CRL 431. Results are expressed as the mean of the optical density (OD) ± standard deviation for each specific Ig (n = 6 mice/group at each time point). Antibodies were determined using the enzyme-linked immunosorbent assay method and samples were considered negative for the presence of specific antibodies when OD 493 < 0.1. Results are representative of two independent experiments. Significant differences with the PppA group were: P < 0.01.

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BMC Immunology

ISSN: 1471-2172

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