Fig. 3. Endogenous HAPLN1 expression in HUVECs of differing passages. (A) The protein levels of HAPLN1 in the various groups were determined by western blot analysis. (B) The mRNA levels of HAPLN1 in the various groups were measured by qRT-PCR. **p<0.005 versus young HUVECs (n=3 per group).
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