Phenotypical characteristics of acute myelocytic leukemia associated with the t(8;21)(q22;q22) chromosomal abnormality: frequent expression of immature B-cell antigen CD19 together with stem cell antigen CD34 - K Kita; Kazunori Nakase; H Miwa; Masahiro Masuya; Kazuhiro Nishii; N Morita; Nobuyuki Takakura; A Otsuji; S Shirakawa; T. UEDA (1992)