Figure 3. Qi Ling serum suppressed IL-6/STAT3 signaling in TAMs. (A) mRNA level of IL-6 in TAMs treated with Qi Ling or PBS were determined by qRT-PCR. (B) Protein level of IL-6 in TAMs treated with Qi Ling or PBS were measured by ELISA. (C) Total STAT3 and p-STAT3 protein levels TAMs treated with Qi Ling or PBS were determined by Western blot. The data represent the mean ± SD. **p < 0.01 determined by Student’s t-test.