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. 2020 Sep 28;52(9):1627–1636. doi: 10.1038/s12276-020-00507-5

Fig. 3. Assay of the bioactivity of rmIL-1Ra purified from NZ-IL1Ra cellular extract.

Fig. 3

EL4.NOB-1 cells (2 × 105) were stimulated with IL-1β (200 pg/well) and various concentrations (37.25–250 ng/well) of purified rmIL-1Ra, commercial mIl-1Ra, or commercial hIL-1Ra. Thereafter, the mIL-2 concentration in the culture supernatant was determined by ELISA. Data are representative of two independent experiments and presented as the mean ± SD. Means denoted by different letters differed significantly (p < 0.05). n.d. not detected. Mouse (gmLAB), rmIL-1Ra purified from NZ-IL1Ra; mouse (commercial), commercially available mIl-1Ra; human (commercial), commercially available hIL-1Ra.