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.
Apoptotic in situ DNA fragmentation analysis. Cytospin was carried out to attach the apoptotic cells to the glass slide, and apoptosis was monitored by the TUNEL assay. The percentage of TUNEL-positive cells (brown) was 0.60% ± 0.15% in the control (in the absence of Stx1) (A) and 63.7% ± 2.7% after exposure of the cells to Stx1 (10 ng/ml) for 4 h (B).
