1. Endogenous opioids: biology and function;Akil;Annu. Rev. Neurosci.,1984
2. Tests for emotionality in rats and mice: a review;Archer;Anim. Behav.,1973
3. Magnetic field effects on stress-induced analgesia in mice: modulation by light;Betancur;Neurosci. Lett.,1994
4. Blanchard RJ, Blanchard DC. Anti-predator defense as models of animal fear and anxiety. In: Brain PF, Blanchard RJ, Parmigiani S, editors. Fear and defense. London: Harwood Academic Publishers; 1990. p. 89–108.
5. Antipredator behavior of Swiss-Webster mice in a visible burrow system;Blanchard;Aggress Behav.,1995