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. 2016 Aug 17;7:1280. doi: 10.3389/fmicb.2016.01280

FIGURE 7.

FIGURE 7

Enzyme-linked immunosorbent assay (ELISA) of recombinant hPSA from BHK-21, HEK293FT, HeLa, and CHO-K1 cells. Error bars indicate standard deviation. At 72 h after transfection, cells were induced with 100 μM CuSO4 to measure the concentration of hPSA. P < 0.05 between CHO-K1 and HEK293FT cells, ∗∗P < 0.01 between HEK293FT and HeLa cells (ANOVA followed by Tukey’s post hoc test).