{"cited_by_count":154654,"description":"This cluster of papers focuses on the use of engineered bacteria, particularly Salmonella typhimurium, for targeted cancer therapy. The research involves various strategies such as tumor-specific colonization, gene delivery, immunotherapy, and metabolic manipulation to induce tumor regression and enhance anti-tumor immunity. Fluorescent protein imaging is utilized to visualize tumor growth, metastasis, and angiogenesis in live animals. 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local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}