Criteria for establishing the validity of in vitro studies with rumen micro-organisms in so-called artificial rumen systems.
D000818:Animals; D001419:Bacteria / Q000208:ethnology*; D001432:Bacteriology; D066298:In Vitro Techniques; D012106:Research; D012417:Rumen; D013270:Stomach / Q000382:microbiology*
BACTERIA/culture; STOMACH/bacteriology