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It is not a measurement of cannabis users.\nexposure: Measurement of CB1 and endocannabinoid system elements in epileptic tissue\nevidence_span: {\"source_cache\": \"artifacts/thc-research/18354002.abstract.txt\", \"locator\": \"Indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"20b254a1e7d4462dcad993b76e889a26d729d604c71e2456c2d13a2a1420c728\", \"start_char\": 0, \"end_char\": 2055, \"text_sha256\": \"20b254a1e7d4462dcad993b76e889a26d729d604c71e2456c2d13a2a1420c728\"}\n[thc-p18354002] Downregulation of the CB1 cannabinoid receptor and related molecular elements of the endocannabinoid system in epileptic human hippocampus. (2008). https://pubmed.ncbi.nlm.nih.gov/18354002/ DOI: 10.1523/jneurosci.4465-07.2008","model_system":"Post-mortem and surgical human hippocampal tissue from epilepsy","directness":"author_interpretation","verification_status":"source_derived_draft","notes":"Exact curation-document quotation, not publisher quotation. 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