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.
Analysis of DNA breaks in senescent HT-p21a cells by comet assay. HT-p21a cells were treated with IPTG for 4 days or left untreated (control). As a positive control cells were treated with DNA-damaging drugs (DDD): doxorubicin (Dox), which causes double strand breaks, or topotecan (Top), which causes mostly single strand breaks. Then cells were subjected to single-cell gel DNA electrophoresis (at neutral and alkaline conditions). Bottom panel: deleted
