title: A significant symbiotic relationship. Caldwell Lecture, 1974.
mesh_terms: D000792:Angiography; D001927:Brain Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D002533:Cerebral Angiography; D014695:Cerebral Ventriculography; D003936:Diagnosis, Computer-Assisted; D049673:History, 20th Century; D006801:Humans; D009192:Myelography; D009485:Neuroradiography; D009493:Neurosurgery; D011011:Pneumoencephalography; D011871:Radiology / Q000266:history; D011877:Radionuclide Imaging; D014054:Tomography; D014481:United States