Sentence: The cytotoxicity of sequential combinations of a taxoid [ paclitaxel ( TAX ) or docetaxel ( TXT ) ] with a vinca alkaloid [ vinorelbine ( NVB ) ] was compared in differentiated and undifferentiated HT29-D4 cells .
Drug combination annotation:
[{'class': 'COMB', 'spans': ['paclitaxel', 'vinorelbine'], 'is_context_needed': True}, {'class': 'COMB', 'spans': [1, 2], 'is_context_needed': True}]