In addition , transcripts were detected in RNA prepared from tonsil B cells and in situ hybridization studies localized them in the germinal center region of adult tonsil .
in addition , transcripts were detected in rna prepared from tonsil b cells and in situ hybridization studies localized them in the germinal center region of adult tonsil .
O O O O O O O O O O B-cell_type I-cell_type I-cell_type O O B-other_name I-other_name I-other_name O O O O B-tissue I-tissue I-tissue O B-body_part I-body_part O