The pleiotropic effects of RA are thought to be mediated through specific nuclear RA receptors ( RARs ) .
the pleiotropic effects of ra are thought to be mediated through specific nuclear ra receptors ( rars ) .
O B-other_name I-other_name O B-other_organic_compound O O O O O O O O B-other_organic_compound O O B-protein_family_or_group O O