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.
Genomic MMTV promoters form compact secondary chromatin structures in the presence of Mg2+. The Re for each MMTV promoter band was determined at the indicated salt concentrations. For each salt concentration, data are expressed as the Re in salt normalized to the Re in running buffer alone (ReMg/Re). A decrease in this ratio is indicative of secondary chromatin structure formation (Fletcher et al. 1994b; Carruthers et al. 1998)
