title: "Spontaneous" changes in the brains of monkeys used for vaccine production.
mesh_terms: D000818:Animals; D001925:Brain Damage, Chronic; D002561:Cerebrovascular Disorders / Q000473:pathology*; D002831:Choroid Plexus / Q000473:pathology; D000882:Haplorhini; D008218:Lymphocytosis / Q000473:pathology; D008587:Meningitis, Viral / Q000473:pathology*; D008590:Meningoencephalitis / Q000473:pathology*; D017955:Poliovirus; D011054:Poliovirus Vaccine, Inactivated; D011712:Pyramidal Tracts / Q000473:pathology
chemical_list: D011054:Poliovirus Vaccine, Inactivated