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The increased mortality is a colony observation.\nexposure: Constitutive CB1 deletion\nevidence_span: {\"source_cache\": \"artifacts/thc-research/10318961.abstract.txt\", \"locator\": \"Indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"ee2674f143f23f9030564139676e845091ab75adaa02b8ab0220bc77860e38ef\", \"start_char\": 0, \"end_char\": 1144, \"text_sha256\": \"ee2674f143f23f9030564139676e845091ab75adaa02b8ab0220bc77860e38ef\"}\n[thc-p10318961] Increased mortality, hypoactivity, and hypoalgesia in cannabinoid CB1 receptor knockout mice. (1999). https://pubmed.ncbi.nlm.nih.gov/10318961/ DOI: 10.1073/pnas.96.10.5780","model_system":"CB1 receptor knockout mice characterised for survival, activity and nociception","directness":"author_interpretation","verification_status":"source_derived_draft","notes":"Exact curation-document quotation, not publisher quotation. 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