Sentence: Results of cell viability assays revealed that treatment with a combination of imatinib and chemotherapy agents irinotecan or 5‑Fu synergistically inhibited cell growth , compared with treatment with any of these drugs alone .
Drug combination annotation:
[{'class': 'POS', 'spans': ['imatinib', 'irinotecan'], 'is_context_needed': False}, {'class': 'POS', 'spans': [0, 2], 'is_context_needed': False}]