any measurable or observable characteristic related to the shape, structure or color of the the tube-like structure that extends from the oral cavity anteriorly to the anus posteriorly

morphology of gastrointestinal tract

INRA:PHASE "INRA PHASE"

ChickenPresent,TroutPresent,QuailPresent,DuckPresent,RabbitPresent,TurkeyPresent,MousePresent,PigPresent,ZebraFishPresent,CarpPresent,SeaBassPresent,SalmonPresent,HorsePresent,GoosePresent,CodPresent,GoatPresent,SeaBreamPresent,CattlePresent,SheepPresent,TilapiaPresent