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.
Relative mRNA expression levels of PARP1 in irradiated HeLa, MCF7, CNE-2 and HCT116 cells treated with fresh medium (FM) or harvested conditioned medium (CM) having previously conditioned the bystander cells (partnered with IRCs) that were incubated until 12 h post-irradiation. Data were analysed using Student’s t-test: two-sample assuming unequal variances. *P < 0.05, **P < 0.01 and error bars represent mean ± SD.
