Ig gene rearrangement was not found in any of the remaining patients who showed no evidence of the presence of CyIg+ cells, although there were CD19/PCA-1 positive cells.     ///    Peripheral mononuclear cells (PBMC) and BePBC were studied immunophenotypically by evaluating the presence of cytoplasmic Ig positive cells (CyIg+) and CD19/PCA-1 reactivity. 