title: The penetration of thorotrast into brain spaces following osmium, glutaraldehyde, and hydroxyadipaldehyde fixation.
mesh_terms: D000447:Aldehydes; D000818:Animals; D005110:Extracellular Space; D066298:In Vitro Techniques; D008854:Microscopy, Electron; D009992:Osmium; D010477:Perfusion; D051381:Rats; D013194:Staining and Labeling; D013911:Thorium Dioxide
chemical_list: D000447:Aldehydes; D009992:Osmium; D013911:Thorium Dioxide