title: Cytology of the central nervous system.
mesh_terms: D001707:Biopsy, Needle; D001927:Brain Diseases / Q000473:pathology*; D001932:Brain Neoplasms / Q000473:pathology* / Q000556:secondary; D002490:Central Nervous System / Q000166:cytology*; D002555:Cerebrospinal Fluid / Q000166:cytology; D003937:Diagnosis, Differential; D006646:Histiocytosis, Langerhans-Cell / Q000473:pathology; D006801:Humans; D007249:Inflammation / Q000473:pathology; D007938:Leukemia / Q000473:pathology; D007958:Leukocyte Count; D007962:Leukocytes / Q000648:ultrastructure; D008206:Lymphatic Diseases / Q000473:pathology; D008223:Lymphoma / Q000473:pathology; D008264:Macrophages / Q000648:ultrastructure; D010586:Phagocytes / Q000648:ultrastructure