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Progenitor phenotype is defined by surface markers and colony formation, not by a demonstrated contribution to a healed vessel.\nexposure: 2.0 atmospheres absolute oxygen for 2 hours, single and over 20 treatments\nevidence_span: {\"source_cache\": \"artifacts/hbot-research/16299259.abstract.txt\", \"locator\": \"Indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"76c0554557a30ac9a32f25b74b27edb5f8f8a57ee0c0660dfe5619b78732c730\", \"start_char\": 0, \"end_char\": 1502, \"text_sha256\": \"76c0554557a30ac9a32f25b74b27edb5f8f8a57ee0c0660dfe5619b78732c730\"}\n[hbot-p16299259] Stem cell mobilization by hyperbaric oxygen. (2006). https://pubmed.ncbi.nlm.nih.gov/16299259/ DOI: 10.1152/ajpheart.00888.2005","model_system":"Human volunteers, mice, and endothelial nitric oxide synthase knockout mice","directness":"author_interpretation","verification_status":"source_derived_draft","notes":"Exact curation-document quotation, not publisher quotation. 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