About the Authors

Marta Castagnini

Affiliation Novartis Vaccines & Diagnostics, Siena, Italy

Monica Picchianti

Affiliations Novartis Vaccines & Diagnostics, Siena, Italy, Department of Evolutionary Biology, University of Siena, Siena, Italy

Eleonora Talluri

Affiliation Novartis Vaccines & Diagnostics, Siena, Italy

Massimiliano Biagini

Affiliation Novartis Vaccines & Diagnostics, Siena, Italy

Mariangela Del Vecchio

Affiliation Novartis Vaccines & Diagnostics, Siena, Italy

Paolo Di Procolo

Affiliation Novartis Vaccines & Diagnostics, Siena, Italy

Nathalie Norais

Affiliation Novartis Vaccines & Diagnostics, Siena, Italy

Vincenzo Nardi-Dei

Affiliation Novartis Vaccines & Diagnostics, Siena, Italy

Enrico Balducci

enrico.balducci@unicam.it

Affiliation School of Biosciences and Biotechnologies, University of Camerino, Camerino, Italy

Competing Interests

Marta Castagnini, Paolo Di Procolo, Monica Picchianti, Massimiliano Biagini, Nathalie Norais, Mariangela Del Vecchio and Vincenzo Nardi-Dei are employed by Novartis Vaccines & Diagnostics. In this study LTA was cloned and purified by Drs. Paolo Ruggiero and Laura Pancotto (Novartis Vaccines & Diagnostics, Siena Italy). This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: EB MC NN. Performed the experiments: MC PDP MDV VND MB MP ET. Analyzed the data: EB NN. Contributed reagents/materials/analysis tools: MB MDV VND. Wrote the paper: EB.