A phylum of oxygenic photosynthetic bacteria comprised of unicellular to multicellular bacteria possessing CHLOROPHYLL a and carrying out oxygenic PHOTOSYNTHESIS. Cyanobacteria are the only known organisms capable of fixing both CARBON DIOXIDE (in the presence of light) and NITROGEN. Cell morphology can include nitrogen-fixing heterocysts and/or resting cells called akinetes. Formerly called blue-green algae, cyanobacteria were traditionally treated as ALGAE.

Descriptor ID	D000458
MeSH Number(s)	B03.280 B03.440.475.100
Concept/Terms	Cyanobacteria Cyanobacteria Blue Green Algae Blue-Green Algae Algae, Blue-Green Blue-Green Bacteria Algae, Blue Green Bacteria, Blue Green Bacteria, Blue-Green Blue Green Bacteria Cyanophyceae

Below are MeSH descriptors whose meaning is more general than "Cyanobacteria".

Below are MeSH descriptors whose meaning is related to "Cyanobacteria".

Below are MeSH descriptors whose meaning is more specific than "Cyanobacteria".