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.
Naloxone blockade of the context-based analgesic effect in rats. A Training and testing paradigm. B Naloxone injection affected PLLs in the hot-plate test. In contrast, the context-based analgesia was not influenced by saline injection. Context A, black; Context B, grey; HT, high temperature; LT, low temperature. n = 10, *P < 0.05, **P < 0.01, paired t test.
