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topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake.","comparator":null,"unit":null,"notes":"","entity":{"slug":"hyperbaric-oxygen","display_name":"Hyperbaric oxygen therapy","entity_type_key":"drug"}},{"dimension":"organism","value_text":"Guinea pig and cultured cells","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"plain_language","value_text":"Scurvy lowers collagen by more than one route, and one of them is not about the hydroxylation step at all.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"primary_references","value_text":"[hbot-p1720597] Ascorbate requirement for hydroxylation and secretion of procollagen: relationship to inhibition of collagen synthesis in scurvy. 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