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metal prints dic metal prints akinete metal prints anabaena metal prints bacteria metal prints bacterial metal prints bacteriology metal prints biology metal prints blue-green algae metal prints cells metal prints differential interference contrast metal prints heterocyst metal prints light micrograph metal prints microbe metal prints microbiology metal prints nitrogen fixation metal prints

photographs dic photos akinete photos anabaena photos bacteria photos bacterial photos bacteriology photos biology photos blue-green algae photos cells photos differential interference contrast photos heterocyst photos light micrograph photos microbe photos microbiology photos nitrogen fixation photos

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Differential interference contrast (DIC) light micrograph of Anabaena sp. algae. Anabaena is a genus of filamentous cyanobacteria and are known for nitrogen-fixing abilities. They are one of four genera of cyanobacteria that produce neurotoxins, which are harmful to local wildlife, as well as farm animals and pets. Anabaena is capable to differentiate specialized cells, the heterocysts (round dark green cells) and akinetes (oval large cell), to survive under different stress conditions. Under nitrogen limited condition, heterocysts provide the filament with nitrogen by fixing nitrogen. Akinetes are spore-like dormant cells that allow survival during adverse environmental conditions. Magnification: x475 when printed at 10 centimetres wide at its longest edge.

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