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.
The effect of perforin deficiency on terminal deoxynucleotidyl transferase mediated dUTP nick end labelling (TUNEL) staining in lung tissues after bleomycin instillation. (A) No positive signals for TUNEL in normal lung parenchyma, and (B) TUNEL positive cells in lung tissues at 14 days (arrowheads). (C) These positive signals for TUNEL (arrowheads) were decreased in PKO mice 14 days after bleomycin instillation. Original magnification, ×250.
