Expression and Function of the Endocannabinoid System in the Retina and the Visual Brain

Table 1

Endocannabinoid levels in the adult retina of various species.

Endocannabinoids	Concentration (pmol/g)	Species
2-arachidonoyl glycerol (2-AG)	2,970; 1,393; 1,600	Rat [17]; Human [20]; Bovine [25]
Anandamide (AEA)	Under detection level; 20,000; 36; 64	Rat [17]; Rat [26]; Human [20]; Bovine [25]
Palmitoylethanolamide (PEA)	130; 200	Rat [17]; Human [20]
Oleoylethanolamide (OEA)	55	Rat [17]