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.
TNF ‐α, MCP ‐1 and MIP ‐1α protein secretion by macrophages cultured on the various sample surfaces after 4, 24 and 48 h. (a) Concentration of TNF‐α; (b) Concentration of MCP‐1; (c). Concentration of MIP‐1α. Error bars represent standard deviation for three specimens for each piece of data. *Statistical significance (P < 0.05).
