title: Sources of hens for laboratory use and background neuropathology.
mesh_terms: D000822:Animal Husbandry; D000818:Animals; D000830:Animals, Laboratory; D002645:Chickens; D005260:Female; D009420:Nervous System / Q000187:drug effects / Q000473:pathology*; D011201:Poultry Diseases / Q000473:pathology; D013047:Specific Pathogen-Free Organisms