any measurable or observable characteristic related to the development of the channels that secrete milk and direct milk to the nipple

MGI:smb "Susan M. Bello, Mouse Genome Informatics Curator"

ChickenAbsent,QuailAbsent,TroutAbsent,GooseAbsent,SeaBassAbsent,TurkeyAbsent,DuckAbsent,TilapiaAbsent,CodAbsent,SalmonAbsent,SeaBreamAbsent,CarpAbsent,SoleAbsent,ZebraFishAbsent

PigPresent,HorsePresent,RabbitPresent,MousePresent,CattlePresent,GoatPresent,SheepPresent