Pesce, Silvia, Marco Greppi, Giovanna Tabellini, Fabio Rampinelli, Silvia Parolini, Daniel Olive, Lorenzo Moretta, Alessandro Moretta, and Emanuela Marcenaro. 2017. “Identification of a Subset of Human Natural Killer Cells Expressing High Levels of Programmed Death 1: A Phenotypic and Functional Characterization”. Italian Journal of Anatomy and Embryology 121 (1):23. https://oajournals.fupress.net/index.php/ijae/article/view/2161.