KNOWLEDGE of the nature of the heterocysts of blue-green algae has been limited by the lack of suitable techniques for investigation of the physiology and biochemistry of these puzzling structures.

In the tiny, beaded chain of the cyanobacterium Anabaena sp. ATCC 33047, two different cells, the photosynthetic factory worker and the nitrogen-fixing specialist, play distinct and powerful roles in ...

Although bacteria are single-celled organisms, many photosynthetic Cyanobacteria can effectively become multicellular, growing as filaments in which some cells differentiate to carry out specific ...