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 |