title: Changes of blood catecholamine levels in the sheep during machine milking.
mesh_terms: D000818:Animals; D002395:Catecholamines / Q000097:blood*; D003612:Dairying; D004837:Epinephrine / Q000097:blood; D005260:Female; D007774:Lactation; D009638:Norepinephrine / Q000097:blood; D011247:Pregnancy; D012756:Sheep / Q000502:physiology*; D013997:Time Factors
chemical_list: D002395:Catecholamines; D009638:Norepinephrine; D004837:Epinephrine