Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Effect of PM2.5 on HUVEC and HMEC-1 tube formation. (A) Cells were treated with 0–800 µg/ml PM2.5 for 24 h, then tube formation was determined by Matrigel tube formation assay. (B) Quantitative analysis of tube formation. *P<0.05 vs. control group (0 µg/ml PM2.5). PM2.5, particulate matter with a diameter of ≤2.5 µm; HUVEC, human umbilical vein endothelial cell; HMEC, human microvascular endothelial cell.
