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.
Representative immunohistochemical staining of (A-D) cyclooxygenase-2 and (E-H) p27 in lung cancer tissues obtained from the patients in this study. (A and E) 0, no expression; (B and F) 1+, weak expression; (C and G) 2+, moderate expression; and (D and H) 3+, strong expression. Scale bars, 250 μm.
