Optimizing therapeutic outcomes of immune checkpoint blockade by a microbial tryptophan metabolite ================================================================================================== * Giorgia Renga * Emilia Nunzi * Marilena Pariano * Matteo Puccetti * Marina Maria Bellet * Giuseppe Pieraccini * Fiorella D’Onofrio * Ilaria Santarelli * Claudia Stincardini * Franco Aversa * Francesca Riuzzi * Cinzia Antognelli * Marco Gargaro * Oxana Bereshchenko * Maurizio Ricci * Stefano Giovagnoli * Luigina Romani * Claudio Costantini