Differentiation of D⁺ cells induced by various retinoids (all at 5 μmol/L), as determined by NBT reduction after 72 hours of treatment.

TTNPB indicates RAR-specific agonist; LG100346, RXR-specific agonist; 9-cis RA, 9-cisretinoic acid. Data are the average values of 2 experiment ± the difference between values.