Question: the differentiated b cells that produce and secrete large amounts of antibodies are called
[{'answer': 'B lymphocytes', 'provenance': [{'wikipedia_id': '211941', 'title': 'B cell', 'start_paragraph_id': 1, 'start_character': 23, 'end_paragraph_id': 1, 'end_character': 36, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '211941', 'title': 'B cell', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 305, 'bleu_score': 0.520290236029479, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17457162189691257144}, 'section': 'Section::::Abstract.'}]}]