Fig. 5.
Cell surface expression of BLyS on CLL-B cells.
Surface expression of BLyS was determined by FACS. CD19+B-CLL, CD19+ normal B cells, or BLyS-Jurkat cells were incubated with anti-BLyS (gray histograms) and a secondary antibody, anti–rat-PE. Isotype and fluorochrome controls were done for each sample (open histograms).