pH values in the oviduct of the hen during egg formation.
D000818:Animals; D002645:Chickens / Q000502:physiology*; D004531:Eggs; D005260:Female; D006863:Hydrogen-Ion Concentration; D010057:Oviducts / Q000502:physiology*; D010058:Oviposition; D014599:Uterus / Q000502:physiology