all-trans-7,8-dihydroretinol + A = all-trans-retinol + AH2
all-trans-7,8-dihydroretinol + a = all-trans-retinol + ah2
all-trans-7,8-dihydroretinol + A = all-trans-retinol + AH2
all-trans-7,8-dihydroretinol + a = all-trans-retinol + ah2