Characterization of ALMC-1 and ALMC-2 cell line morphology and immunophenotype. (A) Wright-Giemsa staining shows the typical plasmacytic features of the primary patient cells as well as both cell lines (original magnification ×60, Olympic Provus AX70 microscope). (B) A panel of antibodies was used to phenotype both cell lines by flow cytometry. Data reflect the ΔMFI as calculated by MFI of specific antibody/MFI of isotype matched control antibody.