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.
Box plot showing mRNA expression for housekeeping genes and target genes in oocytes from young (≤14 years) and old (≥16 years) mares. The boxes show the interquartile range, with the median value indicated by the horizontal line; whiskers show the range. *P < 0.05.
