Blue-green algae

Numéro d’image : 11526931
Blue-green algae
Light micrograph of the filamentous blue-green algae Oscillatoria sp. A small ciliate protozoan is also visible as the small oval body towards lower left. Blue-green algae are considered to be among the most primitive organisms,dating back to pre-Cambrian times. A single row of cells,such as one of these strands,is called a trichome. When surrounded by a gelatinous sheath it is called a filament. Oscillatoria lacks a slimy sheath. The strands of Oscillatoria exhibit a swaying motion & can also move backward & forward. The mechanism for this movement is not yet understood. Magnification: x40 at 35mm,x80 at 5x7cm size
Licence : Droits gérés
Crédit: Science Photo Library / Stammers, Sinclair
Taille de l’image : 4690 px × 2964 px
Model Release : Non requis
Property Release : Non requis
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