Class II molecules are not expressed in plasma cells because of an active suppression resulting in the abrogation of class II gene transcription .
class ii molecules are not expressed in plasma cells because of an active suppression resulting in the abrogation of class ii gene transcription .
B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O O B-cell_type I-cell_type O O O O O O O O O O B-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group O O