{"id":86556,"topic":"ai","source":"Phys.org","title":"Virtual cells built from 4D AI models and 'digital twins' could speed up drug discovery - Phys.org","url":"https://phys.org/news/2026-09-virtual-cells-built-4d-ai.html","url_hash":"1a84dfdb5b6d25694b86b6f89b2d042ec1fcc0b7","author":"","summary":"<a href=\"https://news.google.com/rss/articles/CBMibEFVX3lxTE1QYm0xaG5ra1J2UFVZRGR5UlpVakZ5VGY2OE1QMW9ST0hubzVjTmd0VDdnTFZfS0QyVEdYWmcwMndEdnZVMzI0Z2lvQ294eUJDSHdIOWUxRW5sSkVOY2FScFNoVWlubGhJM0xUUQ?oc=5\" target=\"_blank\">Virtual cells built from 4D AI models and 'digital twins' could speed up drug discovery</a>&nbsp;&nbsp;<font color=\"#6f6f6f\">Phys.org</font>","content":null,"image_url":null,"lang":"en","published_at":"2026-09-20T16:00:05+00:00","fetched_at":"2026-09-20T19:15:05+00:00","status":"read","starred":0,"extract_state":"failed","summary_auto":null,"cluster_id":null,"extract_retries":2,"extract_error":"http_403","contract_version":"news_item.v1","format_contract_version":"news_item_formats.v1","dedup_url":"https://phys.org/news/2026-09-virtual-cells-built-4d-ai.html","quality_profile":{"profile_version":"extraction_quality.v2","bucket":"failed","confidence":0.0,"failure_kind":"http","retryable":false,"retry_after_attempts":0,"reason":"Low confidence: HTTP extraction failure (http_403).","operator_guidance":{"severity":"action_required","recommended_action":"manual_review","next_step":"Open diagnostics and review the original source manually before use.","operator_label":"Manual review","can_retry":false,"can_use_summary":false,"diagnostics_required":true},"content_depth":{"contract_version":"content_depth.v1","category":"summary_only","label":"Summary only","has_full_text":false,"has_summary":true,"content_length":0,"summary_length":359,"usable_text_length":359,"source_field":"summary"},"legacy_collapsed":false,"signals":{"extract_state":"failed","extract_error":"http_403","extract_retries":2,"content_length":0,"summary_length":359}},"news_item":{"id":86556,"canonical_url":"https://phys.org/news/2026-09-virtual-cells-built-4d-ai.html","source_url":"https://phys.org/news/2026-09-virtual-cells-built-4d-ai.html","title":"Virtual cells built from 4D AI models and 'digital twins' could speed up drug discovery - 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