Giovanna Roncador, José-Francisco García Verdes-Montenegro, Sara Tedoldi, Jennifer C. Paterson, Wolfram Klapper, Erica Ballabio, Lorena Maestre, Stefano Pileri, Martin-Leo Hansmann, Miguel A. Piris, David Y. Mason, Teresa Marafioti. Expression of two markers of germinal center T cells (SAP and PD-1) in angioimmunoblastic T-cell lymphoma. Haematologica 2007;92(8):1059-1066; https://doi.org/10.3324/haematol.10864.