the effects of intracerebroventricular ( i.c.v . ) or systemic injections of met- or leu-enkephalin , beta-endorphin , fk 33.824 ( d-ala2 , mephe4 , met ( o5 ) -ol-enkephalin ) and of morphine and naloxone have been studied in baboons , papio papio , which spontaneously show photically induced epileptic responses .
C0014294
leu-enkephalin
C0014298
enkephalin