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.
Methylation of the cyd1 region in the presence and absence of histone H1. (A) Restriction map of the cyd1 region. H, HindIII; N, NdeII; D, DpnI; bar, probe for the Southern blot in (B). Lines and numbers below the map indicate the position and size of the restriction fragments in (B). (B) Southern blot of macronuclear DNA. DNA in lanes 1 and 3 was digested with HindIII; in lanes 2 and 4 with HindIII + DpnI.
