LM of blue-green algae, Spirulina major

LM of blue-green algae, Spirulina major

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Caption: Spirulina algae. Light micrograph, using phase contrast, of rows of unicellular blue-green algae, Spirulina major. Blue-green algae (cyanobacteria) are primitive algae, producing their food from sunlight using photosynthesis. Their internal structure is closely related to bacteria. They are prokaryotic organisms which contain no membrane-bound nucleus; instead, as in bacteria, their nuclear material is dispersed throughout the cell. Some Spirulina species are eaten as a protein-rich health food. Phase contrast images reduce the colour saturation of objects, allowing greater detail to be seen. Magnification: x25 at 35mm size.

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Keywords: alga, algae, algal, blue-green, blue-green algae, botany, cyanobacteria, light micrograph, nature, phase contrast imagery, plant, spirulina major, unicellular, unicellular algae

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