Fig. 2.
IL-21 induced cell proliferation in the cell line OH-2.
Cells (1 × 106) were grown in RPMI–10% FCS with supplements of IL-21 (10 ng/mL) or IL-6 (1 ng/mL) or without supplement. We counted the cells 3 times a week. Cell number on day 0 was normalized to 1. Data shown are representative of 3 different experiments, and error bars represent ± 1 SD of duplicate data.