Fig. 4
From: Serum assisted PD-L1 aptamer screening for improving its stability

Evaluation of placement stabilities of Apt-S1 and Apt-A2 in (A) 10% diluted serum, (B) pure human serum, (C) defatted serum and (D) deproteinized serum. *P < 0.05; **P < 0.01; ***P < 0.001. Triangle in the figure indicates that the Ct value was 0.