A recombinant commensal bacteria elicits heterologous antigen-specific immune responses during pharyngeal carriage by Laver, JR, Gbesemete, D, Dale, AP, Pounce, ZC, Webb, CN, Roche, EF, Guy, JM, Berreen, G, Belogiannis, K, Hill, AR, Ibrahim, MM, Ahmed, M, Cleary, DW, Pandey, AK, Humphries, HE, Allen, L, de Graaf, H, Maiden, M, Faust, SN, Gorringe, AR, Read, RC