Phospholipid--retinaldehyde complex absorbing at 500 nm.
D000605:Amino Alcohols; D002855:Chromatography, Thin Layer; D004952:Esters / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis; D005989:Glycerides / Q000032:analysis*; D009829:Oleic Acids / Q000032:analysis; D010169:Palmitic Acids / Q000032:analysis; D010714:Phosphatidylethanolamines / Q000032:analysis; D010743:Phospholipids / Q000032:analysis*; D013057:Spectrum Analysis; D013229:Stearic Acids / Q000032:analysis; D014801:Vitamin A / Q000032:analysis*
D000605:Amino Alcohols; D004952:Esters; D005227:Fatty Acids; D005989:Glycerides; D009829:Oleic Acids; D010169:Palmitic Acids; D010714:Phosphatidylethanolamines; D010743:Phospholipids; D013229:Stearic Acids; D014801:Vitamin A