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Ten volunteers, and the mouse exposure is far longer than the human one.\nexposure: Sildenafil 100 milligrams orally before 11 percent oxygen for 30 minutes, and 25 milligrams per kilogram daily through three weeks of 10 percent oxygen in mice\nevidence_span: {\"source_cache\": \"artifacts/sildenafil-research/11468204.abstract.txt\", \"locator\": \"Indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"41d880663288811422c4400d86de1eedd4d5b254d8bb3a59a8fbff01dedbcb24\", \"start_char\": 0, \"end_char\": 1820, \"text_sha256\": \"41d880663288811422c4400d86de1eedd4d5b254d8bb3a59a8fbff01dedbcb24\"}\n[sil-p11468204] Sildenafil inhibits hypoxia-induced pulmonary hypertension. 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