title: Histamine levels in the blood of pregnant mares.
mesh_terms: D000818:Animals; D001681:Biological Assay; D005260:Female; D006168:Guinea Pigs; D006632:Histamine / Q000097:blood*; D006736:Horses; D007422:Intestines / Q000187:drug effects; D011247:Pregnancy; D011270:Pregnancy, Animal; D013997:Time Factors
chemical_list: D006632:Histamine