Linkage of retinal to opsin and absence of phospholipids in purified frog visual pigment 500.
D000818:Animals; D001001:Anura; D002848:Chromatography, DEAE-Cellulose; D002850:Chromatography, Gel; D010743:Phospholipids / Q000032:analysis*; D010759:Phosphorus Isotopes; D012168:Retinal Pigments / Q000302:isolation & purification*; D013053:Spectrophotometry
D010743:Phospholipids; D010759:Phosphorus Isotopes; D012168:Retinal Pigments