complete nutrient role feed role feed OBI Person: Jennifer Fostel Purina rat chow; cited use: Control; F = feed (rat chow); W = water; F. g. = feed-ginger concentrate. www.academicjournals.org/AJB/PDF/pdf2007/19Sep/Egwurugwu%20et%20al.pdf - Feb 29, 2008 a role that inheres in a material entity and is realized in the use of that material entity by lab animal to provide all needed nourishment. feed role metadata complete