Diatom, SEM
Diatoms, SEM
Diatom frustules, SEM
Diatom frustule, SEM
Cyanobacteria, SEM
Radiolarian, SEM
Microcoleus cyanobacteria, SEM
Diatom shell, SEM
Amphisphaerina radiolarian, SEM
Acrosphaera radiolarian, SEM
Diatom, light micrograph
Scenedesmus algae, SEM
Tabellaria diatoms, SEM
Haematococcus alga, light micrograph
Spirogyra algae, light micrograph
Diatoms, light micrograph
Green algae, light micrograph
Climacostomum protozoan, SEM
Selection of diatoms, SEM
Orbulina foraminiferan, SEM
Archaea, SEM
Diatom algae, SEM
Colonial diatom, SEM
Diatoms in sediment, SEM
Dinoflagellate protozoan, SEM
Tetrahymena protozoan, SEM
Ciliate protozoan, SEM
Paramecium protozoan, SEM
Vorticella protozoan, SEM
Chilodonella ciliate protozoan, SEM
Ciliate protozoans, SEM
Euplotes protozoa, SEM
Euglena flagellate protozoa, SEM
Euastrum desmid, light micrograph
Diatom alga, SEM
Pleurosigma sp diatom, light micrograph
Blepharisma ciliate protozoan, SEM
Haematococcus algae, light micrograph
Microalgae, light micrograph
Golden algae, light micrograph
Parasite spore, SEM
Radiolarian test, SEM
Desmid, light micrograph
Netrium desmid, light micrograph
Micrasterias desmid, light micrograph
Micrasterias desmids, light micrograph
Xanthidium desmids, light micrograph
Desmids, light micrograph
Cosmarium desmids, light micrograph
Euastrum desmids, light micrograph
Netrium desmids, light micrograph
Ciliate protozoan, light micrograph
Green alga, light micrograph
Microsterias green alga, light micrograph
Pediastrum green algae, light micrograph
Radiolarian test or skeleton SEM X200
Radiolarian test or skeleton SEM X895
Orbulina, SEM