Characterization of NTPDase (NTPDase 1: ecto-apyrase; ecto-diphosphohydrolase; CD39; E.C. 3.6.1.5) activity in human lymphocytes - Leal, DB R; Streher, C A; Neu, T N; Bittencourt, F P; Leal, CA M; da Silva, JE P; Morsch, V M; Schetinger, MR C (Biochim Biophys Acta, 2005)