PHA/IL2: an efficient mitogen cocktail for cytogenetic studies of non-Hodgkin lymphoma and chronic lymphocytic leukemia..     ///    "We report the results of a selected series of 57 patients with non-Hodgkin lymphoma (NHL) or chronic lymphocytic leukemia (CLL), in which only the culture stimulated with PHA/IL2 demonstrated the presence of an abnormal clone. "