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.
Physical dependence on morphine in mice fed high versus low methyl donor diets.
Notes: Mice receiving high or low methyl donor diets in either the perinatal period or after weaning (eight mice per group) were tested for physical dependence on morphine. *P < 0.05 for high versus low methyl donor diet.
