Light in the middle of the tunnel.
D001436:Bacteriorhodopsins / Q000378:metabolism*; D001693:Biological Transport, Active; D002338:Carotenoids / Q000378:metabolism*; D002462:Cell Membrane / Q000378:metabolism; D007700:Kinetics; D012172:Retinaldehyde / Q000378:metabolism; D013059:Spectrum Analysis, Raman; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
D002338:Carotenoids; D001436:Bacteriorhodopsins; D012172:Retinaldehyde