On this basis , we have investigated the role of all-trans retinoic acid ( ATRA ) and its isomer 9-cis RA in FL hematopoiesis .
on this basis , we have investigated the role of all-trans retinoic acid ( atra ) and its isomer 9-cis ra in fl hematopoiesis .
O O O O O O O O O O B-other_organic_compound I-other_organic_compound I-other_organic_compound O B-other_organic_compound O O O O B-other_organic_compound I-other_organic_compound O B-body_part O O