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Figure 4: Western blot showing response to IL-6 in SNU_MM1393_BM and SNU_MM1393_SC. Whole cell lysates obtained from both cell lines were treated with IL-6, sIL-6R, and combined IL-6 and sIL-6R for 30 min (1: control, 2: IL-6 5 ng/mL, 3: sIL-6R 25 ng/mL, and 4: IL-6 5 ng/mL + sIL-6R 25 ng/mL).