 Electron Microscope Image: Asterionella parasitised by Chytrid microfungus |  Electron Microscope Image: Chytrid microfungus parasitising Asterionella formosa |  Electron Microscope Image: Chytrid microfungus parasitising a diatom (Asterionella formosa) |  Electron Microscope Image: Filament of Oscillatoria being ingested by the ciliate Nassula tumida |