title: Electron-opaque microscopic fibrils in lakes: their demonstration, their biological derivation and their potential significance in the redistribution of cations.
mesh_terms: D002412:Cations; D056890:Eukaryota / Q000378:metabolism*; D005618:Fresh Water; D010839:Phytoplankton / Q000378:metabolism*; D010933:Plankton / Q000378:metabolism*; D011134:Polysaccharides; D014867:Water / Q000032:analysis*; D014871:Water Microbiology
chemical_list: D002412:Cations; D011134:Polysaccharides; D014867:Water